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HyperCrash Introduction Pre-Processing for RADIOSS Crash Analysis
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The following countries have distributors for Altair Engineering: Asia Pacific: Indonesia, Malaysia, Singapore, Taiwan, Thailand Europe: Czech Republic, Hungary, Hungary, Poland, Romania, Spain, Turkey. ©2009 Altair Engineering, Inc. All rights reserved. No part of this publication may be r eproduced, transmitted, transcribed, stored in a retrieval system, or translated to another language without the written permission of Altair Engineering, Inc. To obtain this permission, write to the attention Altair Engineering legal department at: 1820 E. Big Beaver, Troy, Michigan, USA, or call +1-248-614-2400.
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Listed below are Altair HyperWorks applications. Copyright Altair Engineering Inc., All Rights Reserved for: ®
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®
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HyperMesh 1990-2009; HyperView 1999-2009; OptiStruct 1996-2009; RADIOSS 1986-2009; HyperCrash™ ® ® ® ® 2001-2009; HyperStudy 1999-2009; HyperGraph 1995-2009; MotionView 1993-2009; MotionSolve 2002 ® ® 2009; TextView™ 1996-2009; MediaView™ 1999-2009; HyperForm 1998-2009; HyperXtrude 1999-2009; ® HyperView Player 2001-2009; Process Manager™ 2003-2009; Data Manager™ 2005-2009; Assembler™ 2005-2009; FEModel™ 2004-2009; BatchMesher™ 2003-2009; Templex™ 1990-2009; Manufacturing Solutions™ 2005-2009; HyperDieDynamics™ 2007-2009; HyperMath™ 2007-2009; ScriptView™ 2007-2009. In addition to HyperWorks® HyperWorks® trademarks noted above, GridWorks™, GridWorks™, PBS™ Gridworks®, PBS™ Professional®, PBS™ and Portable Batch System® are trademarks of ALTAIR ENGINEERING INC., as is patent # 6,859,792. All are protected under U.S. and international laws and treaties. All other marks are the property of their respective owners.
HyperCrash Introduction I
Proprietary Information of Altair Engineering, Inc.
HyperWorks 10.0
Altair Engineering Contact Information Web site
www.altair.com
FTP site
Address: ftp.altair.com or ftp2.altair.com or http://ftp.altair.com/ftp Login: ftp Password:
Location
Telephone
e-mail
North America
248.614.2425
hwsupport@altair.com
China
86.21.6117.1666
support@altair.com.cn
France
33.1.4133.0992
francesupport@altair.com
Germany
49.7031.6208.22
hwsupport@altair.de
India
91.80.6629.4500 1800.425.0234 (toll free)
support@india.altair.com
Italy
39.800.905.595
support@altairengineering.it
Japan
81.3.5396.2881
support@altairjp.co.jp
Korea
82.31.716.4321
support@altair.co.kr
Scandinavia
46.46.286.2052
support@altair.se
United Kingdom
44.1926.468.600
support@uk.altair.com
Brazil
55.11.3884.0414
br_support@altair.com.br
Australia
64.9.413.7981
anzsupport@altair.com
New Zealand
64.9.413.7981
anzsupport@altair.com
The following countries have distributors for Altair Engineering: Asia Pacific: Indonesia, Malaysia, Singapore, Taiwan, Thailand Europe: Czech Republic, Hungary, Hungary, Poland, Romania, Spain, Turkey. ©2009 Altair Engineering, Inc. All rights reserved. No part of this publication may be r eproduced, transmitted, transcribed, stored in a retrieval system, or translated to another language without the written permission of Altair Engineering, Inc. To obtain this permission, write to the attention Altair Engineering legal department at: 1820 E. Big Beaver, Troy, Michigan, USA, or call +1-248-614-2400.
Trademark and Registered Trademark Acknowledgments ®
®
©
Listed below are Altair HyperWorks applications. Copyright Altair Engineering Inc., All Rights Reserved for: ®
®
®
®
HyperMesh 1990-2009; HyperView 1999-2009; OptiStruct 1996-2009; RADIOSS 1986-2009; HyperCrash™ ® ® ® ® 2001-2009; HyperStudy 1999-2009; HyperGraph 1995-2009; MotionView 1993-2009; MotionSolve 2002 ® ® 2009; TextView™ 1996-2009; MediaView™ 1999-2009; HyperForm 1998-2009; HyperXtrude 1999-2009; ® HyperView Player 2001-2009; Process Manager™ 2003-2009; Data Manager™ 2005-2009; Assembler™ 2005-2009; FEModel™ 2004-2009; BatchMesher™ 2003-2009; Templex™ 1990-2009; Manufacturing Solutions™ 2005-2009; HyperDieDynamics™ 2007-2009; HyperMath™ 2007-2009; ScriptView™ 2007-2009. In addition to HyperWorks® HyperWorks® trademarks noted above, GridWorks™, GridWorks™, PBS™ Gridworks®, PBS™ Professional®, PBS™ and Portable Batch System® are trademarks of ALTAIR ENGINEERING INC., as is patent # 6,859,792. All are protected under U.S. and international laws and treaties. All other marks are the property of their respective owners.
HyperCrash Introduction I
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HyperWorks 10.0
Table bl e of Contents on tents
HyperCrash yperCrash Intr Introdu oducti ction on Pre-proc Pre-processin essing g for fo r RADIOS RADIOSS S Crash Crash An alysis alysi s
Chapter 1: Getting Getti ng Started Start ed .......... ............... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... ..... 1 Section 1: Windows Description................ Description.............................. ............................ ............................ ............................ ............................. ................. 1 Section 2: Mouse Modes.......................... Modes........................................ ............................ ............................ ............................ ............................ ................. ... 2 Section 3: Keyboard Keyboard Options .......................... ........................................ ............................ ............................ ............................ ........................ .......... 3 Section 4: Display Toolbar Toolbar ........................... ......................................... ............................ ............................ ........................... ...........................4 ..............4 Section 5: Info Toolbar Toolbar ........................... ......................................... ............................ ............................ ............................. ............................. .................. .... 8 Section 6: Tree Window ........................... ......................................... ............................ ............................ ............................. ............................. ................ .. 9 Section 7: Help In HyperCrash................. HyperCrash............................... ............................ ............................ ............................ ............................ ................. ... 9 Section 8: Description Description of the Example ........................... ......................................... ............................ ............................ ....................... ......... 9
Chapter 2: Intr oduc od ucti tion on .......... ............... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... ........ ... 11 Section 1: Open HyperCrash HyperCrash and Read the Input File........................................ File.................................................... ............ 11 Section 2: Tree Structure Hierarchy Hierarchy ........................... ......................................... ............................. ............................. ........................ .......... 14 Section 3: Delete a Part ........................... ......................................... ............................ ............................ ............................ ........................... ............... .. 18 Section 4: Mesh Class Definition Definition ............................ .......................................... ............................ ............................. ............................18 .............18
Chapter 3: 3: Material and and Pro Propert pert y Allo Al locat catio ion n .......... ............... .......... .......... .......... .......... .......... .......... .......... ......... .... 21 Section 1: Create Material.................... Material.................................. ........................... ........................... ............................ ............................ .................... ...... 21 Section 2: Modify Materials Materials ............................ ......................................... ........................... ............................ ............................ ........................ .......... 23 Section 3: Material Material Allocation.......................... Allocation........................................ ........................... ........................... ............................ ....................... ......... 25 Section 4: Create Properties Properties ........................... ......................................... ........................... ........................... ............................ ....................... ......... 27 Section 5: Modify Properties Properties ........................... ......................................... ............................ ............................ ............................ ...................... ........ 29
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HyperCrash Introduction II
Section 6: Property Allocation ......................................................................................... 30 Section 7: Mat & Prop Allocation from the Tree Window ................................................ 32
Chapter 4: Element Creation/Modificatio n ..........................................................39 Section 1: Create New Elements .................................................................................... 39 Section 2: Modify Elements............................................................................................. 42 Section 3: Split a Part into Two Parts.............................................................................. 44 Section 4: Create a Reinforcement................................................................................. 45 Section 5: Create a Symmetry of a Part.......................................................................... 47
Chapter 5: Connecti ons ........................................................................................ 49 Section 1: Read a Spotfile file (MWF Format)................................................................. 49 Section 2: Display Spotweld Options .............................................................................. 52 Section 3: Spotweld Checking ........................................................................................ 54 Section 4: Create New Spotwelds................................................................................... 57 Section 5: Export a New Spotweld File ........................................................................... 58 Section 6: Bolt Creation .................................................................................................. 59 Section 7: Tied Interface Creation................................................................................... 63 Section 8: Check the Model Connections ....................................................................... 65
Chapter 6: Merge and Connect the Subsystems ................................................67 Section 1: Read the Engine File...................................................................................... 67 Section 2: Connect the Engine and the Transmission .................................................... 70 Section 3: Check the Mass Balance of the Model........................................................... 74 Section 4: Merge the Barrier ........................................................................................... 77 Section 5: Move the Barrier to its Correct Location......................................................... 78
Chapter 7: RADIOSS Features ............................................................................. 81 Section 1: Create a Boundary Condition......................................................................... 81 Section 2: Create an Interface to Handle the Contacts for the Car................................. 83 Section 3: Create an Interface to Handle the Contects Between the Car and Barrier .... 85 Section 4: Create an Initial Velocity to Apply to the Entire Car ....................................... 86 Section 5: Create an Added Mass on the Right Door ..................................................... 88 Section 6: Create a Rigid Wall to Model the Ground ...................................................... 91
Chapter 8: Qualit y Check...................................................................................... 93 Section 1: Check the Intersections and Penetrations in the Model................................. 93 Section 2: Check the Thicknesses .................................................................................. 87
HyperCrash Introduction III
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HyperWorks 10.0
Section 3: Check the Model with ModelChecker............................................................. 87
Chapter 9: Replace Fun ction ............................................................................. 103 Chapter 10: Time History Selecti on ................................................................... 107 Section 1: TH Node Selection ....................................................................................... 107 Section 2: TH Section Creation ..................................................................................... 108 Section 3: TH Part Creation .......................................................................................... 110
Chapter 11: Clean the Model.............................................................................. 113 Chapter 12: Final Steps ...................................................................................... 115 Section 1: Export the Model .......................................................................................... 115 Section 2: Run the Starter for this Model ......................................................................118
Chapter 13: Dumm y Posi tioner.......................................................................... 121 Section 1: Load the Dummy.......................................................................................... 121 Section 2: Position the Dummy ..................................................................................... 124
Chapter 14: Seatbelt Generator ......................................................................... 127 Appendi x 1: The M00 Fil e, a HyperCrash f il e ................................................... 131
HyperWorks 10.0
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HyperCrash Introduction IV
HyperCrash Introduction V
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HyperWorks 10.0
Chapter 1: Getting Started
Chapter 1
Getting Started Section 1: Windows Description The HyperCrash environment window is composed of the following menus and windows: •
The Notebook Window, located on the left side of the HyperCrash environment window
•
The Graphic Window , located in the center of the HyperCrash environment window
•
The Message Window , located below the Notebook Window
•
The Pull-down Menu Bar , located across the top of the HyperCrash environment window
•
The Display Toolbar , located on the right side of the environment window
•
The Info Toolbar , located on the lower right corner
•
The Dialog Menu Bar , located at the bottom of the HyperCrash environment window
•
The Tree Toolbar located at the top of the Tree Windo w .
HyperWorks 10.0
HyperCrash Introductio n 1 Proprietary Information of Alt air Engineering, Inc.
Chapter 1: Getting Started
Section 2: Mouse Modes Two mouse settings are now available: the classic HyperCrash mode and a new one that follows the HyperMesh\HyperWorks approach. You can now switch from one mode to another while in an active session (select the Options menu and activate or deactivate Use Classic Mouse Setting). Classic HyperCrash Mouse Mode Task Description Middle + right mouse button: Rotations Press the C key and pick a node with the left mouse button to change the center of rotation. Press the CTRL and C keys to switch off the automatic center of rotation. Press the SHIFT and C keys to switch on the automatic center of rotation. Translations Right mouse button: Zoom Zoom in: middle mouse button and slide up: Zoom out: middle mouse button and slide down. Zoom box in: press the Z key and drag a box in the graphic window with the left mouse button: Zoom box out: press the SHIFT and Z keys and drag a box in the •
•
•
• • •
•
HyperCrash Introduction 2
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Chapter 1: Getting Started
graphic window with the left mouse button. Zoom in: press the key. Zoom out: press the key. HyperMesh/HyperWorks Mouse Mode Task Description Rotations Press the CTRL key + left mouse button and move the mouse around. The model rotates with the movement of the mouse. Release the left mouse button and press it again to rotate the model in a different direction. Press the CTRL key and quick-click the left mouse button anywhere on the model to pick a new center of rotation. Press the CTRL key + left mouse button to rotate the model on this new center of rotation. Translations Press the CTRL key + right mouse button an d move the mouse around. The model is panned (translated) according to the mouse movement. Zoom Press the CTRL key + middle mouse button, move the mouse around, and then release the mouse button. A white box is drawn according to the area of the mouse movement. When the mouse button is released, HyperCrash zooms in on the portion of the model where the box was drawn. Press the CTRL key + quick-click the middle mouse button. The model is fitted to the graphic window . Press the CTRL key and spin the mouse wheel. The model zooms in or out depending on which direction you spin the mouse wheel. • •
•
•
•
•
•
•
•
•
Section 3: Keyboard Option s •
F1, F2, F3 and F4: in picking mode, when more than one element is selected, F1 and F2 allow you to switch from one element to another. Then, F3 allows you to validate or F4 allows you to cancel the choice.
•
F5: Display the rigid walls.
•
F6: Display the rigid bodies.
•
F7: Display the initial velocities.
•
F8: Display the free nodes (not belonging to any element).
•
F9 F12: Standard views (clicking the same key a second time will reverse the view).
•
SHIFT F5: Display the added masses.
•
SHIFT F6: Display the boundary conditions.
•
SHIFT F7: Display the contact interfaces.
•
SHIFT F8: Clear all displayed options.
•
SHIFT C: Switch on the automatic center of rotation.
•
W: Set the background color to white.
•
B : Set the background color to black.
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Chapter 1: Getting Started •
•
P: Switch between perspective view and orthogonal view. Z: Zoom in (press Z and drag a box with the left mouse button in the Graphic Window ).
•
SHIFT Z: Zoom out box.
•
ENTER or Y key : Yes (validate or accept).
•
ESC key : Cancel or dismiss.
Section 4: Display Toolbar Using the view mode icons of the Display Toolbar , you can access different views of your model. When you are loading your model, all the parts are visible in the Graphic Window, called the Front Scr een . To get a better view of the parts you are working on or to help you gain a better understanding of the model, you can remove the selected parts from the Front Screen . The unselected parts are visible in the Graphic Window called the Reverse Screen . This is the HyperCrash Show / No Show system. Refresh graphic window
Toggle Reverse Display
Center the model and fit it to the screen
Display all parts in a model
Isolate by element type (shells, trusses, springs, beams, or solids)
View simplification
Mask by element type
Display by element type
Display / hide details
Control transparency level Display solid elements / display external solid
Display / hide free nodes
surfaces
Display graphic object
Mask all graphic objects
Control display elements
Display by tree selection Display parts in node proximity
Unmask selected parts Display connected elements
Display parts connected to selected part
Mask selected parts
Mask boxed parts
Isolate selected parts
Isolate boxed parts
Views
Display mode
HyperCrash Introduction 4
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Chapter 1: Getting Started
Note: Some good feature for displaying and undisplaying parts:
Ctrl + Shift and right mouse selection will mask a Part.
Ctrl + Shift and left mouse selection will unmask a Part
Shift and hold the right mouse button and draw a window will mask all the parts within the window. Repeating the same process with the left mouse button will unmask the parts within the window.
Model Browser : under Model pull down menu, click Model Browser :
In the Model Browser window, you can turn On/Off by checking/uncheking
The square box left to the Part or Assembly You can Display all by right mouse clicking on the Root Model and Click on Show or Hide
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Chapter 1: Getting Started
Cross Reference in Model Browser:
HyperCrash Introduction 6
HyperWorks 10.0 Proprietary Information of Alt air Engineering, Inc.
Chapter 1: Getting Started
Right mouse click on a Part or Assembly and click Cross Reference:
Creating Inc lude File under Model Browser :
HyperWorks 10.0
HyperCrash Introductio n 7 Proprietary Information of Alt air Engineering, Inc.
Chapter 1: Getting Started
Click on Model View
switch to Include-
Submodel and ok. Anywhere on window, right mouse click . You then pick anything you’ll like put in Include file with the middle mouse button drag it to the include file:
Section 5: Info Toolbar The Info toolbar can be used to find information about the mesh: Show node info
Node info by ID
Show element info
Element info by ID
Show object info
Object info by ID
Find the distance between two nodes
Find the angle between three nodes
HyperCrash Introduction 8
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Chapter 1: Getting Started
Section 6: Tree Window Use the Tree to navigate in your model hierarchy. Clicking the right mouse button (in the Notebook wind ow ) brings up a pop-up menu. Icons in the Tree Windo w and their meanings:
Assembly (subset)
Part
Subpart
Here is the current state of the Tree toolbar:
Expand
Collapse All
Expand/collapse tree Select Unselect all Select / unselect all items Invert Selection
Add to View Add the tree selection to the display Add to View and Resize Add tree selection to display and resize to fit Remove from View
Invert the selection
Mask tree selection from display
Search
View Only
Open the search panel to search for an Assembly, a Part or a Subpart
Isolate tree selections
Highlight Transparency for tree selection
Section 7: Help in HyperCrash At any time, you can consult the HyperCrash online help. From the Pull-down Menu Bar, click Help and choose HyperCrash to open the online help in your web browser. Note: The HyperCrash help manual opens with Netscape (Mozilla under Linux platform).
Section 8: Description of the Example The purpose of this example is to build an offset frontal crash model using HyperCrash
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HyperCrash Introductio n 9 Proprietary Information of Alt air Engineering, Inc.
Chapter 1: Getting Started
Initial Velocity 35 MPH
Units : N, mm, s, Ton, Mpa
HyperCrash Introd uct ion 10 Proprietary Information of Alt air Engineering, Inc.
HyperWorks 10.0
Chapter 2: Introduction
Chapter 2
Introduction Section 1: Open HyperCrash and Read the Input File When you first start HyperCrash, the startup screen will appear (see following image):
HyperWorks 10.0
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Chapter 2: Introduction
Chose the User profi le, Choose whether you wish to run HyperCrash in the New or Classic mode, and choose the units environment you want to run the session in (for this tutorial, choose the Units System: N mm s T). Click on Run . Step 1: In the HyperCrash environment window, identify all the menus, windows, and toolbars described in Chapter 1. Step 2: Load the model called CAR35MPH_0000. r ad 1. In the Menu Bar , click File
Import
RADIOSS fil e (see following image).
HyperCrash Introd uct ion 12 Proprietary Information of Alt air Engineering, Inc.
HyperWorks 10.0
Chapter 2: Introduction
2. In the Radioss Input window, select the file CAR35MPH_0000. r ad and click OK (see following image).
Step 3: Use the mouse and keyboard (CTRL) options to move the model.
Zoom in and out
HyperWorks 10.0
Translation
Rotation
HyperCrash Introd uct ion 13 Proprietary Information of Alt air Engineering, Inc.
Chapter 2: Introduction
Section 2: Tree Structure / Hierarchy Step 1: Create a new assembly called LEFT DOOR and put the entire l ef t door * parts in it. 1. Click with the left mouse button in the Tree window (anywhere among assemblies). 2. Click the right mouse button and select New Assembly (see following image).
3. In the new window, enter LEFT DOOR and click Ok, as in the following image.
4. With the left mouse button, highlight the entire l ef t door * parts.
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HyperWorks 10.0
Chapter 2: Introduction
Note:
You may use the CTRL or SHIFT or CTRL+SHIFT keys to make the selection in the Tree easier.
5. Use the middle mouse button to drag the selected parts in the LEFT DOOR assembly.
Step 2: Create a new assembly called RI GHT DOOR and drag the entire r i ght door * parts in it. 1. Click with the left mouse button in the Tree Windo w. 2. Click the right mouse button and select New Assembly.
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Chapter 2: Introduction
3. In the new window, enter RI GHT DOOR and click Ok. 4. With the left mouse button, highlight the entire r i ght door * parts. 5. Use the middle mouse button to drag the selected parts in the RI GHT DOOR assembly. Step 3: Create a new assembly called DOORS and drag the two assemblies LEFT DOOR and RI GHT DOOR into it. 1. Click with the left mouse button in the Tree Windo w. 2. Click the right mouse button and select New Assembly. 3. In the new sub-window, enter DOORS and click Ok. 4. With the left mouse button, highlight the assemblies LEFT DOOR and RI GHT DOOR. 5. Use the middle mouse button to drag the selected parts into the DOORS assembly.
Step 4: Export the assembly called DOORS in RADIOSS V10.0 Block format. 1. In the Tree Windo w, highlight the assembly, DOORS.
•
You can view your selection by clicking the
icon.
2. Click the right mouse button and select Export Selection, as shown in the following image).
HyperCrash Introd uct ion 16 Proprietary Information of Alt air Engineering, Inc.
HyperWorks 10.0
Chapter 2: Introduction
3. In the Export Selection window:
•
Select Bloc k 10.0 for the file format (default).
•
Select the toggle, Save Only Geometry and click Ok.
HyperWorks 10.0
HyperCrash Introd uct ion 17 Proprietary Information of Alt air Engineering, Inc.
Chapter 2: Introduction •
•
•
In the Write Block Format 100 RADIOSS File pop-up window, enter DOORS and click Ok. In the HEADER of RADIOSS pop-up window, click the Save Model button. The subsystem is exported. Click Close in the window called Write Engine file, V100.
Section 3: Delete a Part Step 1: In the Tree Windo w, highlight the part called REAR_TI RE in the Wheel s assembly. Step 2: Click the View Only button (
).
Step 3: In the Tree Windo w, click the right mouse button and select Delete. Step 4: Answer Yes to the question in HyperCrash pop_up window (or press the ENTER key) to confirm deletion of the part.
Section 4: Mesh Class Definition Five mesh classes are available in HyperCrash. From Class 1, defining very important parts (fine mesh, severe criteria), to Class 4, defining parts of low influence on the result precision (coarse mesh). If no class is defined for a part, HyperCrash automatically defines this part as Class
s (s stands for standard).
Step 1: In the Tree Windo w, highlight the subsets Fr ames and Front f ace (in the assembly Body i n Whi t e) and click the View only icon (
).
Step 2: In the Tree Windo w, click the right mouse button and select Class Selectio n, then, Class 1 (see following image).
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HyperWorks 10.0
Chapter 2: Introduction
Step 3: Repeat step1 and step2 to define the assemblies Fr ont suspensi on, Wheel s , and Subf r ame as Class 2. Step 4: Repeat step1 and step2 to define the assemblies Body (in the assembly Body i n Whi t e) and DOORS as Class 3. Step 5: Repeat step1 and step2 to define the assemblies Rear (in the assembly Body i n Whi t e), Rear suspensi on, and ot her s as Class 4. Step 6: Click Display All ( ) and Fit Model ( the Graphic Window.
) buttons to display the whole model in
Step 7: Make sure to save the Model at the end of each chapter: Click on f ile Export ___> Radioss __> enter file Name: CHPT2
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Chapter 2: Introduction
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HyperWorks 10.0
Chapter 3: Material and Property Allocation
Chapter 3
Material and Property Allocation Following the steps in Chapter 2, Section 1, load the model called CHPT2_0000.rad.
Section 1: Create Material Step 1: From the Pull-down Menu Bar, click Model, then Material.
Step 2: In the Material panel, click the RADIOSS menu, choose Elasto-Plastic, then select Johnson Cook (2).
Step 3: In the fields in the lower section of the Material panel, enter the following parameters: Title: high_steel
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Chapter 3: Material and Property Allocation
Initial Density: 7.9e-09 Young’s Modulus: 210000 Poisson’s Ratio: 0.3 Yeild Stress : 250 Hardening Parameter: 500 Hardening Exponent: 0.5 Step 4: Click See Curv e (
) to plot the true stress v. true strain curve.
Step 5: Close the plot.
Step 6: Click the Save in database button (
).
Step 7: In the Save in Data Base window, delete the path to the global database, enter the path to your local data base or working directory then enter high_steel, as name. Note:
By default, HyperCrash points to the global database. You do not have permission to write here but you can create your own local database.
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HyperWorks 10.0
Chapter 3: Material and Property Allocation
Path to your Local database
Step 8: Click OK to save your material in your local database. Step 9: Click Cancel and Close to close the Material menu.
Section 2: Modify Materials Step 1: From the Pull-down Menu Bar , click Model and choose Material. Step 2: switch to the Tree Windo w, highlight the part ENGINE_MOUNT1 (in the assembly Body in White Frames). →
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HyperCrash Introd uct ion 23 Proprietary Information of Alt air Engineering, Inc.
Chapter 3: Material and Property Allocation
Step 3: Click on Isolate Tree Selection (
).
Step 4: Go back to the Material panel and click on pick part to see and select corresponding item in list ( Selected button (
), select the display item then Yes and click on See
).
Step 5: Click the See Curv e icon ( ) on the lower part of the panel. The Plot Window opens. Click Close to close the curve after reviewing it.
Step 6: Modify the following parameters: Title: low_yield_steel Yield Stress: 165 Hardening Exponent: 0.5
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HyperWorks 10.0
Chapter 3: Material and Property Allocation
Step 7: Click See Curve ( ) to plot the new stress v. strain curve. Click Close to close the curve after reviewing it.
Step 8: In the Material Properties panel, click Save. Step 9: Click Close to close the Material panel.
Section 3: Material Allocation Note:
You can allocate materials from the global database or local database, or you can even pick existing materials from within the model.
Step 1: From the Pull-down Menu Bar , click Model and choose Material. Step 2: In the Material panel, select the Switch between Model & DB icon ( click the Go to Home Database directory icon (
). Then
).
Step 3: Allocation from the Global Database. 1. Select STEEL material and click the See Selected icon (
) (see following image).
2. The material parameters appear.
HyperWorks 10.0
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Chapter 3: Material and Property Allocation
3. Go to the Tree panel, highlight the part CBN-SEAT-REINF-FT (in the assembly Body in White
→
Frames) and click the Isolate Tree Selectio ns icon (
).
4. Go back to the Material panel and click the Selected parts of tree icon (
).
5. Click Save to allocate the material. Step 4: Allocation from the Local Database. 1. In the Modify panel, select Switch b etween Model & DB(
) twice. Then click the
Change the database directo ry icon ( ), enter the path to your local database or working directory and click the OK button. 2. Highlight high_steel_0000.rad and click the See selected icon ( material parameters.
) to see the
3. Go to the Tree panel, highlight the part RAILS_R (in the assembly Body in White Frames), and click the Isolate Tree Selectio ns icon (
→
).
4. Go back to the Material panel and click the Selected parts of tree icon (
).
5. Click Save to allocate the material and click Close to close the Material panel. Step 5: Allocation from the Model. 1. Go to the Material panel, select rubber material and click the See select ed icon ( ). Only the parts assigned to the material rubber are displayed in the Graphic Window.
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Chapter 3: Material and Property Allocation
2. In the Tree Windo w, highlight the parts TIRE-FT-L and TIRE-FT-R (in the assembly Wheels—front_wheel) and click the Isolate Tree Selection s button (
3. Go back to the Material panel, click the Include picked parts button ( tires from the Graphic Window.
). ), and pick the
4. After selecting both tires, confirm the selection by clicking Yes in the Dialog Menu Bar (lower-right corner of the HyperCrash window). 5. Click Save to allocate the material (confirm in the Dialog Menu Bar ) and click Close to close the Material panel.
Section 4: Create Properties Step 1: From the Pull-down Menu Bar , click Model, and choose Property.
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Chapter 3: Material and Property Allocation
Step 2: In the Property panel, click the RADIOSS menu, choose Surface, and select Shell (1).
Step 3: Enter the following parameters as in the following image: Title: shell_1.1mm Number of Integration Points: 5 Thickness: 1.1
Step 4: Click the Save in database icon (
).
Step 5: In the Save in data base sub-window, navigate to your local database Note:
By default, HyperCrash points to the global database. You do not have permission to write here, but you can create your own local database.
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Chapter 3: Material and Property Allocation
Step 6: Click OK to save your material in your local database (see following image).
Step 7: Click Cancel and then click Close to close the Properties panel.
Section 5: Modify Properties Step 1: From the Pull-down Menu Bar , click Model and choose Property. Step 2: In the Tree Windo w, highlight the part ENGINE_MOUNT1 (in the assembly Body in White
→
Frames) and click the Isolate Tree Selectio ns icon (
).
.
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Step 3: Click on Isolate Tree Selection (
).
Step 4: Go back to the Property panel and click on pick part to see and select corresponding item in list ( Selected button (
), select the display item then Yes and click on See
).
Step 5: The property parameters appear in the panel: Modify the following parameters: Title: Engine_Mount_2.0mm Nb Integration Points: 5 Thickness: 2.0 Step 6: Click Save and Close to close the Property panel.
Section 6: Property Allocation Note:
You can allocate properties from the global database or local database, or you can pick existing properties from within the model.
Step 1: From the Pull-down Menu Bar , click Model and choose Property. Step 2: In the Property panel, select the Switch b etween Model & DB icon ( click the Go to Home Database directory icon (
). Then,
).
Step 3: Allocation from the Global Database. 1. Select SOLID GENERAL and click the See selected icon (
).
2. The property parameters appear as follows:
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Chapter 3: Material and Property Allocation
3. In the Tree Windo w, highlight the part ENG-MNT-BUSH-L (in the assembly Body in White
→
Frames) and click the Isolate Tree Selectio ns icon (
).
4. Go back to the Property panel and click the Selected parts of tree icon (
).
5. Click Save to allocate the property. Step 4: Allocation from the Local Database 1. Go to Property panel and select the Switch between Model & DB icon (
). Then,
click the Folder icon ( ), enter the path to your local database or working directory and click the OK button. 2. Select shell_1.1mm_0000 as in the following image and click the See Selected icon (
).
The property parameters appear.
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Chapter 3: Material and Property Allocation
3. In the Tree Windo w, highlight the part LEFT RAIL 2 (in the assembly Body in White
→
Frames) and click the Isolate Tree Selection s icon (
).
4. Go back to the Property panel and click the Selected parts of tree icon (
).
5. Click Save to allocate the property. Step 5: Allocation from the Model 1. In the Property panel click the Switch between Model & DB icon ( ) to switch to the model database. Then, select Engine_Mount_2.0mm property number 21 as in the following image and click the See select ed icon (
).
2. In the Tree Windo w, highlight the parts TIRE-FRT-L and TIRE-FRT-R (in the assembly Wheels) and click the Isolate Tree Selectio ns button (
).
Step 6: Go back to the Property sub-panel, click the Include picked parts button ( and pick the tires in the Graphic Window.
),
Step 7: Confirm the selection by clicking Yes in the Dialog Menu Bar (lower-right corner of the HyperCrash main window). Step 8: Click Save in the properties panel to allocate the property and answer Yes to the question in the Dialog Menu Bar , “New PARTS have been selected. Do you want to continue?” Then, click Close to close the properties panel.
Section 7: Mat & Prop Allocation f rom the Tree Window Step 1:
In the Tree Windo w, highlight the assembly called RIGHT_DOOR and click the Isolate Tree Selectio ns button (
Step 2:
).
In the Tree Windo w, click the right mouse button and select List Selection.
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Chapter 3: Material and Property Allocation
Step 3: In the Selection List Window, click the right door dr2outer part to highlight it. Step 4: Click the right mouse button and select Change Thic kness.
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Chapter 3: Material and Property Allocation
Step 5: In the Change Thick ness pop-up panel, enter 1.20 and click Ok (see following image).
Step 6: In the Selection List Window, click the RIGHT_DOOR assembly to highlight it. Step 7: Click the right mouse button and select Change Material.
Step 8: In the Material File Wind ow, select STEEL and click OK. The PLAS_JOHNS Material curve (Stress vs. Strain) will appear:
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Step 9: Click Save in the PLAS_JOHNS window. To confirm the curve, click Yes in the Dialog Menu Bar .
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Chapter 3: Material and Property Allocation
Note: Note:
You can modify the material law parameters and click Ap click Ap pl y to update the curve.
Step 10:See 10: See the Selection Selection List Window to view the results. Selection L ist Window. Window . Step 11:Explore 11: Explore the different options available in the Selection Step 12:Click 12: Click Close in the List Selection Window. Step 13:In 13: In the Model Display menu, click the Display All ( (
) or (Ctrl+S) and Fit Model
) or or (Ctr (Ctrl+ l+R) R) icon icons s to to dis displ play ay the the whol whole e mod model el in the the Graphic Graphic Window. Window .
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Chapter 3: Material and Property Allocation
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HyperWorks 10.0 10.0
Chapter 4: Element Creation/Modification
Chapter 4
Element Creation / Modification The purpose of this chapter is to create and modify elements with HyperCrash. Following the steps in Chapter 2, Section 1, load the model called CHPT3_0000.rad.
Section 1: Create New Elements Step 1: In the Tree Windo w, highlight the part called RAILS-U-FT-O-R (in the assembly Body in White Frames). →
Step 2: Click the Isolate Tree Selection s button (
).
Step 3: From the Pull-down Menu Bar, select Mesh Editi ng, Node, then Create.
. Step 4: In the Mesh Editing panel, select the Copy sub-panel:
HyperWorks 10.0
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Chapter 4: Element Creation/Modification
Step 5: Zoom in on the area depicted in the following image (using the center mouse button), click the button to select the nodes to duplicate, and click Yes in the Dialog Menu Bar after the last node for duplication selection is done.
Step 6: Click the rail.
button to define the displacement vector and click two nodes on the
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Chapter 4: Element Creation/Modification
Step 7: View the translation with the See translatio n button (
) and click Save to save it.
Step 8: Follow Steps 6 to 8, selecting the appropriate nodes to obtain the result below then close node creation:
Step 9: In the Mesh Editing Panel, use the drop-down menu to choose the Element/Create sub-panel. Step 10:Click the Include picked part button ( Graphic Window (RAILS-U-FT-O-R).
) and select the part displayed in the
.
y
Step 11:From the drop-down menu, choose element type to create and select Shell4n and-or Shell3n. Then, select the nodes to create new elements.
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Chapter 4: Element Creation/Modification
Step 12: Press ESC or click Cancel in the Dialog Menu Bar when the element creation is. Completed. Next, click Save and then click Close to close the Mesh Editing panel.
Section 2: Modify Elements Step 1: In the Tree Windo w, highlight the part called RAILS-U-FT-O-R (in the assembly Body in White Frames). →
Step 2: Click the Isolate Tree Selections button (
).
Step 3: From the Pull-down Menu Bar, select Mesh Editing, then Element, then Modify. Step 4: In the Mesh Editing panel, select 2D:
Step 5: Zoom in on the designated area (using the middle mouse button). Click the Split Shell 4 nodes in 2 shells 3 nodes button ( ). Select one element and one node, and click Save to confirm. When finished, press ESC or click Cancel in the Dialog Menu Bar.
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Chapter 4: Element Creation/Modification
Step 6: Delete the elements on the edge. 1. Click the Ad d/Rem ov e elements by pi cking s election button ( ), and, in the Graphic Window, select the elements that you want to delete and click Yes in the Dialog Menu Bar to end the elements selection. 2. Delete the elements by clicking the Remov e selected shell 4 nodes or shell 3 nodes icon ( panel.
) and click Yes in the Dialog Menu Bar to return to the Modify
Element
3. Click Cancel in the Dialog Menu Bar to complete element selection. 4. Click Close to close the Modify / Element panel.
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Chapter 4: Element Creation/Modification
Section 3: Split a Part into Two Parts HyperCrash allows you to split a part into two parts. Step 1: In the Tree Windo w, highlight the parts called RAILS-U-FT-O-R (in the assembly Body in White Frames). →
Step 2: Click the Isolate Tree Selectio ns button (
).
Step 3: From the Pull-down Menu Bar, click Mesh Editing, then Part, then Split. Step 4: Click the Include picked parts button ( the part to be split (RAILS-U-FT-O-R).
), and, in the Graphic Window, select
Step 5: Click the Ad d el emen ts by bo x sel ecti on button ( Window, select the elements as shown below.
Note:
), and, in the Graphic
Apply the view shown above for the selection to avoid left/right confusion.
Step 6: Select the toggle, Create new Part. Step 7: In the New part n ame field, enter the name RAIL-U-FT-O-L and click Ok (see following image). Step 8: Keep the same thickness and the same material (see following image). Step 9: Click Save and then Close to return to the main menu.
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Chapter 4: Element Creation/Modification
Note:
The old part and the new one are grouped in special group of parts named New_physical_part as shown, following. It is not possible to move the parts out of this group.
Section 4: Create a Reinforcement Step 1: In the Tree Windo w, highlight the parts called RAIL-U-FT-O-L (in the assembly Body in White Frames New_physical_part). →
→
Step 2: Click the Isolate Tree Selectio ns button (
).
Step 3: From the Pull-down Menu Bar, select Mesh Editing, then Part, then Sheet. Step 4: In the Mesh Editing panel, select Stiffner . Step 5: Enter the name of the reinforcement, REINF_L, and click OK. Step 6: Select the part: click
, then pick the part in the graphic window, and validate in
the dialog window. Use the the new part.
HyperWorks 10.0
icon to choose the elements to be offset to create
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Chapter 4: Element Creation/Modification
Step 7: In the Material section of the panel select the toggle to keep the same material. In the Property section, keep the same thickness value; you can change it by entering a new value. Step 8: In the Translation section of the panel, select a normal to elements translation. Step 9: In the Offset section of the panel, enter an offset value of 1.2 and press OK (see following image) to check the result which is an outer reinforcement. (A negative offset value here would create an inner reinforcement.)
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Chapter 4: Element Creation/Modification
Step 10:Click Save, then click Close to close the panel.
Section 5: Create a Symmetry of a Part Step 1: In the Tree Windo w, highlight the part called REINF_L. Step 2: Click the Isolate Tree Selection s button (
).
Step 3: From the Pull-down Menu Bar, select Mesh Editing, then Part, then Duplicate. Step 4: Using the Include picked part button ( (Yes in the Dialog Menu Bar ).
), select the part, REINF_L, and confirm
Step 5: From the Options pull-down menu, select Mesh only. Step 6: Click the Mirror icon (
).
Step 7: Click Ap pl y m ir ro r , click Save, and then click Close to close the panel.
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Chapter 4: Element Creation/Modification
Note:
The created part is located in the Duplicated parts assembly in the Tree Window.
Step 8: We need to attach the reinforcement to the frame: Go to mesh Editing
Enter Left_ Reinf. Rigid Body as name and click ok.
Click on ( ) to select the rigid body slave nodes; after selecting, click yes to complete the selection then Click on Save. Repeat The same step to attach all the reinforcement plates, and close Mesh Editing.
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HyperWorks 10.0
Chapter 5: Connections
Chapter 5
Connections Following the steps in Chapter 2.1, load the model called CHPT4_0000.rad.
Section 1: Read a Spotfile file (MWF Format) Step 1: In the Display Toolbar click the Display All ( display the whole model.
) and Fit Model (
) icons to
Step 2: From the Pull-down Menu Bar, select Connections, then click Spotweld, then Import from File…. Step 3:
spotweld file window, select the file, spotfile (see following image), and click OK . In the
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Chapter 5: Connections
Step 4: While HyperCrash is automatically creating the spotwelds, you can open the file called spotfile with the editor of your choice and view the format. Step 5: As soon as HyperCrash completes the spotweld creation, correct the few bad spotwelds: Note:
The bad spotwelds are highlighted in red in the Spotweld Modify sub-window (see following image). HyperCrash declares a spotweld bad when it does not meet the specified weld criteria, see below
.
1. In the Spotweld
Modify panel, click the first bad spotweld.
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Chapter 5: Connections
2. Click the See selected spot weld(s) button ( Window.
) to display the spotweld in the Graphic
Click the Fit Model button ( ) in the Display Toolbar to see the parts and the bad spotweld location (small yellow and red sphere: ).
Bad spotweld location. Parts 137 & 138 Should be welded
3. Select the Location
Element tab.
4. Click the Pick one shell element and see spo tweld button (
HyperWorks 10.0
).
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5. In the Graphic Window, click an element to define the new location for the spotweld. If the new location is acceptable, two green elements and a blue spotweld appear on the screen. 6. Click Save to confirm the new location. An acceptable spotweld is created and the (uncreated) bad spotweld is automatically removed from the red color list)
Bad spotweld
5: Click this element
6: Saved spotweld
The green color means that HyperCrash can create the spotweld at this new location
Two red elements = RADIOSS interface type 2 Two green nodes + one blue spring = RADIOSS spring type 13
7. Repeat Steps 1 to 6 to correct or eliminate all the bad spotwelds (red color list) and then close the panel.
Section 2: Display Spotweld Optio ns Step 1: In the Pull-down Menu Bar, click Spotweld, then Modify. Step 2: In the Tree Windo w, highlight the part called right door-FT-O-R (in the assembly, DOORS RIGHT DOOR). →
Step 3: Click the Isolate Tree Selectio ns button ( Step 4: In the Spotweld
).
Modify panel, click the Include picked parts button
Step 5: In the Graphic Window, click the displayed part and validate the selection with Yes. All the spotwelds that belong to this part are displayed.
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Chapter 5: Connections
Note: •
•
All the spotwelds that belong to the selected part are highlighted in the Spotweld Modify panel. Press SHIFT+F8 to hide the spotwelds from the screen, and click Close to close the panel.
Step 6: In the Tree Windo w, highlight the same part (right door-FT-O-R). Step 7: Click the right mouse button and select Connections.
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Chapter 5: Connections
Step 8: The spotweld connections that belong to this part are displayed in the small Notebook Window. Step 9: In the Notebook Window, right-click the spotweld connections to display, undisplay, and clear the spotwelds from Graphic Window. Note: •
•
When selecting an assembly, the Internal Connections and External Connections options are available. Internal Connections searches for the connections between the parts of the selected assembly. External Connections searches for the connections between the parts of the selected assembly and the rest of the model.
Section 3: Spotweld Checking Step 1: In the Pull-down Menu Bar, click Spotweld, then Criteria…. Step 2: In the Check Criteria Window, select the criteria you want to check and enter the values you want for each parameter (it is recommended to use the default values as depicted in the image below). Spring Length Min: 0.1 mm Spring Lengt h Max: 10 mm An gl e Max: 15 degrees Time Step: 8e-7 s
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Chapter 5: Connections
Step 3: In the Drop-down Menu Bar, click Spotweld, then Check.
Note: The spotwelds beyond the selected criteria are highlighted (orange list) in the Spotweld Check panel. They will be referred to as “marginal spotwelds.” Step 4: Select one marginal spotweld in the orange list and click the
button.
Step 5: See the message in gr een in the Message Windo w (lower-left corner of HyperCrash main window) to learn why this spotweld is considered marginal.
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Chapter 5: Connections
Step 6: Modify the spotweld. Note:
When you click the button, the spotweld and its attached parts are displayed in the Graphic Window. Changing the location of the spotweld is likely to correct the spotweld as in the example below. Follow steps 3 to 6 to do so.
HyperCrash proposal
Relocation of the spotweld
The new spotweld is created
Step 7: Repeat step 3 to 6 for the other marginal spotwelds. Step 8: Click Close to close the Spotweld
Check panel.
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Chapter 5: Connections
Section 4: Create a Few New Spotwelds Step 1: From the Pull-down Menu Bar, click Connections, then Spotweld, then Create. Step 2: In the Tree Windo w, highlight the parts called right door-FT-I-R and right door-FT-O-R. Step 3: Click the Isolate Tree Selectio ns button ( Step 4: Go back to the Spotweld button (
).
Create panel and click the Include parts by box
).
Step 5: In the Graphic Window, drag a box to select the two parts. Step 6: In the Element sub-panel, click the Pick one shell element and see spotweld button (
).
Step 7: In the Graphic Window, click an element to weld the two parts. Two green elements and a blue spotweld appear on the screen. Step 8: To save this spotweld, click Save in the Spotweld is created.
Create panel. The spotweld
Step 9: Repeat step 7 and 8 to create a few more spotwelds on the two parts.
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7: Click an element Green means that HyperCrash can create the spotweld at this location Note:
8: Saved spotweld Two red elements = interface type 2 Two green nodes + one blue spring = spring type 13
You can also click the Node sub-panel and click nodes in the Graphic Window or the Line sub-panel to automatically create spotwelds between two nodes or two elements with a certain pitch length.
Step 10:Click Cancel in the Dialog Menu Bar to stop the selection.
Section 5: Export a New Spotweld File Step 1: In the Pull-down Menu Bar, click Connections, then Export File…, and select Al l Spotwelds with Property Id.
Step 2: In the Export connection file with p roperty Id window, enter Spotfile2 and click OK (see following image).
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Chapter 5: Connections
Step 3: Click Close to close the Spotweld panel and return to the main window.
Section 6: Bolt Creation Step 1: From the Pull-down Menu Bar, select Connections, then click Bolt and select Create.
Step 2: In the Tree Windo w, highlight the part, RIGHT-ARM (in the assembly Front suspension) and the parts RIGHT-SUBFRAME-1 and RIGHT-SUBFRAME-2 (in the assembly Subframe). Step 3: Click the Isolate Tree Selection s button (
HyperWorks 10.0
).
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Chapter 5: Connections
Step 4: Go back to the Bolt
Create panel. The First Set button (
activated, so click the Include picked parts button (
) is already
).
Step 5: In the Graphic Window, click the part, RIGHT-ARM to highlight it. Click Yes in the Dialog Menu Bar to confirm the selection. Step 6: Click the Second Set button ( parts button (
) to activate it, then, click the Include picked
).
Step 7: In the Graphic Window, click the parts RIGHT-SUBFRAME-1 and RIGHTSUBFRAME-2 to highlight them. Click Yes in the Dialog Menu Bar to confirm the selection. Step 8: In the Location panel, select the Node sub-panel. Step 9: Enter the following coordinates: X = 3782, Y = 400 and Z = 187 (see following image).
Step 10:Click the Put coordinates and see bolt button ( ). A blue cylinder appears in the Graphic Window. This cylinder represents the bolt.
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Step 11:Select the Direction sub-panel and uncheck the Normal to element(s) toggle. Step 12:Enter the X, Y, and Z coordinates, X = 1 Y = 0 Z = 0 to define the bolt direction (see following image). Then, press the ENTER key. The bolt moves to the correct direction.
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Step 13:In the Properties section, enter RIGHT REAR FIXING for the Bolt Name, 40 for the Length 1, 40 for the Length 2, and 60 for the Diameter (see following image). Then, press the ENTER key.
Note:
When you press the ENTER key, the nodes included in the blue cylinder become red. Those nodes will be part of the bolt.
Step 14:Click the Bolt with spring toggle to activate it (see the note, following). Step 15:Click Save and then Close to return to the main menu. Note:
When you click save, the bolt becomes yellow and two red rigid bodies and a small green spring appear on the screen. Press SHIFT+F8 to hide the bolt from the Graphic Window.
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Chapter 5: Connections
Section 7: Tied Interface Creation Step 1: From the Pull-down Menu Bar, select LoadCase and click Contact interfaces, then Create/Modify.
Step 2: In the Choose Contact section of the panel, click the pull-down menu and select Kinematic Condition (Type 2). Step 3: Click the Properties tab, and in the Title field, enter the name Windshield_Connection, as shown in the following image.
Step 4: Click the Selection tab and select Slave from the options. Step 5: In the Tree Windo w, highlight the WINDSHIELD-FT part (in the assembly Body in White
→
Body) and click the Isolate Tree Selectio ns button (
Step 6: Go back to the Contact below (by picking (
HyperWorks 10.0
).
Create panel and select the slave nodes as shown ) or by box (
)).
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Chapter 5: Connections
Step 7: On the Selection panel, select the toggle, Master . Step 8: In the Tree Windo w, highlight the CBN-OUTER-R part (in the assembly Body in White
→
Body) and click Isolate Tree Selectio ns (
Step 9: Go back to the Contact by box (
).
Create/Modify panel and select (by picking (
) or
)) the master elements as follows:
Step 10:In the Tree Windo w, highlight the CBN-OUTER-L part (in the assembly Body in White
→
Body) and click the Isolate Tree Selectio ns button (
Step 11:Go back to the Contact by box (
).
Create/Modify panel and select (by picking (
) or
)) the master elements on the other side.
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Chapter 5: Connections
Step 12:Click Save and Close to close the Contact Interface panel.
Section 8: Check the Model Connections Step 1: In the Tree Windo w, select the whole model. Step 2: In the Pull-down Menu Bar, select Quality, then Check Connectivit y of Tree Selection. This menu allows you to find if a part is not connected to the rest of the model (that is, a free part).
Step 3: Click the Expand/Collapse all button (
HyperWorks 10.0
).
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Chapter 5: Connections
Step 4: Click the See parts connectivity to picked part button ( ), and then select a part in the Graphic Window. You will see all the parts connected to the picked part in the Notebook Window. When finished, click Cancel in the Dialog Menu Bar. Step 5: In the part group list, click one group to highlight it, then click the Isolate Tree Selections button (
) to display it on the screen.
Step 6: Click Display All ( ) and Fit Model ( the Graphic Window.
) buttons to display the whole model in
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HyperWorks 10.0
Chapter 6: Merge and Connect Subsystems
Chapter 6
Merge and Connect the Subsystems The purpose of this chapter is to merge subsystems with HyperCrash and to manage the model mass. Following the steps in Chapter 2, Section 1, load the model called CHPT5_0000.rad.
Section 1: Read the Engine File ) and Fit Model ( Step 1: Click the Display All ( model in the Graphic Window .
) buttons to display the whole
Step 2: In the Pull-down Menu Bar, click File, Import then RADIOSS Step 3: In the HyperCrash window select Merge.
Step 4: In the Select a RADIOSS File window, select ENGINE_0000.rad and click OK (see following image).
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Chapter 6: Merge and Connect Subsystems
Step 5: In the Offset Values section of the Merge panel,since the engine and transmissions coordinates are already correct. click Merge to merge the engine and transmission.
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Note: •
The merged subsystem is highlighted in the Graphic Window . Click the Refresh button (
HyperWorks 10.0
) to return to a normal display.
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Section 2: Connect the Engine and the Transmission Step 1: In the Tree Windo w , highlight the parts called ENGINE_MOUNT1 (from the assembly Body in White Frames) and ENGINE (from the assembly Engine). →
Step 2: Click the Isolate Tree Selectio ns button (
).
Step 3: From the Pull-down Menu Bar, click Mesh Editing , then Rigid Body , then Create.
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Step 4: Enter the name LEFT ENGINE MOUNT (see following image) and click Ok .
Step 5: In the Selections panel, use the different selection icons to set your node selection as shown in image below. Step 6: In the Graphic Window, zoom in on the left engine mount ENGINE_MOUNT1, and select a few nodes.
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Step 7: Click Save to save the selection. Note: •
•
Buttons are available to help you select or deselect slave nodes during the rigid body definition. Use the F6 key as a switch to display or hide the rigid bodies in the Graphic Window .
Step 8: Click Close in the Rigid body panel to return to the main window. Step 9: In the Tree Windo w , highlight the parts called CONNECTION (from the assembly Front suspension) and FR_AXLE (from the assembly Engine). Step 10: Click the Display Tree Selectio ns button (
).
Step 11: In the Pull-down Menu Bar, click Mesh Editing , then Node, then Modify.
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Step 12: Select the Merge Merge mult i sub-panel.
Step 13: Click the toggle Set1 and click the Include picked part button (
).
Step 14: In the Graphic Graphic Window, pick the part CONNECTION to highlight it. Step 15: Click Yes in the Dialog Menu Bar to confirm the selection. Step 16: Click the toggle Set2 and click the Include picked part button (
).
Graphic Window, pick the part FR_AXLE to highlight it. Step 17: In the Graphic Step 18: Click Yes in the Dialog Menu Bar to confirm the selection. Step 19: In the gap search search t o merge field, enter the value, 0.2 and click the See Node(s)
button on ( to merge Selectio Selectio ns butt suggests for you to merge.
). Hyp Hyper erCr Cras ash h highl highlig ight hts s in red red the the node nodes s tha thatt it
Step 20: To merge the suggested nodes, click Save.
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HyperCrash highlights the node(s) it suggests to merge. Merge Mult i panel to return to the main window. Step 21: Click Close in the Merge
Sect Sectio ion n 3: Check Check the t he Mass Mass Balance of Your Model HyperCrash allows you to check the model mass and adjust it according to the real mass of the vehicle. Assume that the values are coming from the tests: Tested vehicle mass = 0.7 T Weight Weight on f ront axis = 0.443395 T Weight on rear axis = 0.256605 T Step 1: From the Pull-down Menu Bar, click Mass Mass B alance and select Compute and manage model mass .
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Chapter 6: Merge and Connect Subsystems
Step 2: HyperCrash gives you information about the model mass and the center of gravity (COG). Step 3: Click
HyperWorks 10.0 10.0
to enter the theoretical mass of your vehicle: 1.24156 T. Click OK .
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Step 4: Enter the X coordinates of the front and rear axles: Xfront = 3750mm XRear = 1062mm Note:
These values can be entered using the Determine Determine axles axles by picking node button (
).
Step 5: Click
to view the mass on the front and rear axles.
Step 6: Modify theses values with respect to the test results: Weight Weight on f ront axle = 0.515589 T Weight on rear axle = 0.448653 T
to choose the added Step 7: You can select Added mass to modify by clicking masses to which the modifications will apply an d those to which they will not apply. Note:
the button opens the following panel in order to include your mass distribution selection among the available added masses. To save your choices, click Save Configuration . You may print a report by clicking Print .
Step 8: To close the window without saving any changes, click Cancel All .
Step 9: On the Add ed Mass Mass Management Management panel, click Step 10: Click
to modify the car mass.
to see the modifications to the different added masses.
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Step 11: Click Save to save the modifications and Close to close the panel.
Sect Sectio ion n 4: Merg Merge e the Barr Barrier ier Step 1: In the Pull-down Menu Bar, click File, Import__> RADIOSS then Merge.
Step 3: Select ODBBLD00 and click OK .
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Section 5: Move the Barrier to it s Correct Location Step 1: Check the Apply Transformation then in the Translation along values : enter X = 1576, Y = 14, and Z = 624 (see following image), and click Merge to reposition the barrier in the correct location.
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HyperWorks 10.0
Chapter 7: RADIOSS Features
Chapter 7
RADIOSS Features The purpose of this chapter is to create some RADIOSS features such as boundary conditions, interfaces, initial velocity, added mass and rigid walls. Following the steps in Chapter 2, Section.1, load the model called CHPT6_0000. r ad.
Section 1: Create a Boundary Condition Step 1: From the Pull-down Menu Bar, select LoadCase, then Boundary Conditions, then Create.
Step 2: In the field provided, enter the name FI X_ODB (see following image) and click OK.
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Step 3: Use the F6 key to display the rigid bodies. Step 4: In the Graphic Window, zoom in at the back of the barrier to clearly locate its master node (see image, following). Then, click the Ad d/Remo ve no des by picking selection button ( ) to select the ODB rigid body master node in the Graphic Window (it turns red). Step 5: Click Yes in the Dialog Menu Bar to confirm the selection. Step 6: In the Boundary condition components section of the Create panel, toggle all translations and rotations to fix all the degrees of freedom for this node. Step 7: Click Save and then Close to return to the main menu.
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Chapter 7: RADIOSS Features
Section 2: Create an Interface to Handle the Contacts fo r the Car Step 1: From the Pull-down Menu Bar, select LoadCase and click Contact interfaces, then Create/Modify.
Step 2: Using the Choose Contact pull-down menu, select Multi u sage (Type 7). Step 3: Click the Properties tab. In the field, Title, enter the name CAR_CAR (see following image).
Step 4: Click the Selection tab, and select the surface choice, Self-Impact (see following image).
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Step 5: In the Tree Windo w, select all the assemblies and parts of the model except ODB assembly and click the Isolate Tree Selection s button (
).
Step 6: Go back to Contact Interface panel, and use the Ad d s elec ted par ts by bo x button (
) to select elements.
Step 7: In the Graphic Window, drag a box to select the following elements:
Note:
The selected elements are highlighted in red.
Step 8: In the Properties sub-panel, enter the following values (see following image): Coulomb friction = 0. 2 Scale factor for stiffness = 1. 0 Min. gap for impact activ, = 0. 7 For Friction penalty formulation set to Stiffness
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Step 9: Click Save and then Close to return to the main menu.
Section 3: Create an Interface to Handle the Contacts between the Car and the Barrier Step 1: From the Pull-down Menu Bar, select LoadCase and click Contact Interf. Create/Modify. Step 2: Using the Choose Contact pull-down menu, select Multi u sage (Type 7). Step 3: Click the Properties tab. In the Title field, enter the name CAR_BARRI ER. Step 4: Click the Selection tab. From the surface options, select Slave. Step 5: Click the Ad d s elec ted par ts by bo x button ( ) and drag a box around the front of the car as shown in the example, following (the parts are highlighted in red).
Step 6: Next, select Master from the surface options. Step 7: In the Tree Windo w, highlight the following parts in the ODB assembly and click the Isolate Tree Selectio ns button (
HyperWorks 10.0
):
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Step 8: Go back to the Contact panel, click on (
) to show the solid external face only.
In the Selections sub-panel, click the Ad d s elec ted par ts of Tree button (
).
Step 9: In the Properties sub-panel, enter the following values: Coulomb friction = 0. 2 Scale factor for stiffness = 1. 0 Min. gap for impact activ. = 0. 7 For Friction penalty formulation set to Stiffness Step 10:Click Save+sym. (see the next Note) and then Close to return to the main menu. Note: •
When you click the Save+sym. button, HyperCrash saves the defined interface and automatically creates its symmetric: the slave surface becomes master surface, and the master surface becomes slave surface.
•
The Save+sym. option is not available for a Self-Impact interface.
•
The extension _symis added to the symmetric interface name.
Interface CAR_BARRIER
Interface CAR_BARRIER_sym
Slave
Master
Master
Slave
Section 4: Create an Initial Velocity to Apply to the Entir e Car Step 1: From the Pull-down Menu Bar, select LoadCase and click Initial Velocities, then Create.
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Step 2: Enter 35 MPH for the title and click OK. Step 3: In the Tree Windo w, highlight all the assemblies and parts except ODB. Step 4: Go back to the Initial Velocity panel, click the Ad d s elec ted par ts of Tree button (
). All the nodes are highlighted except the ODB nodes.
Step 5: In the Translation Components field, enter Vx = +15646. 4 as shown in the following image (15646.4 mm/s = 35 MPH).
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Step 6: Click Save, answer Yes to the question in the Dialog wi ndow, and then click Close.
Section 5: Create an Added Mass on the Right Door Step 1: From the Pull-down Menu Bar, select LoadCase and click Ad ded Mass es, then Create.
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Step 2: Enter the name Door 5 kg and click OK. Step 3: For the selection, click the Include picked parts button (
).
Step 4: In the Graphic Window, click the right door inner part (it becomes red).
. Step 5: Click Yes to confirm the selection in the Dialog Menu Bar . Step 6: Enter 0. 005 in the Mass field as shown in the following image (0.005 T = 5 kg). Note:
The mass is equally distributed on all the selected nodes.
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Step 7: Click Save and then Close to return to the main menu.
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Section 6: Create a Rigid Wall to Model the Ground Step 1: From the Pull-down Menu Bar, select LoadCase and click Rigid Walls, then Create.
Step 2: From the Rigid Walls drop-down menu, select Infinit e Plane. Step 3: In the Rigid wall name field, enter the name GROUND as shown in the following image. Step 4: Enter the following values for M0 and M1 as shown in the following image: M0
X = 0 M1
X=0
Y=0
Y=0
Z = 5. 9
Z =10
Step 5: In the Section sub-panel, in the Distance for search of s lave nodes field, enter a value of 200mm (see following image).
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Note:
You can use the selection icons to add or remove nodes from the rigid wall selection.
Step 6: Switch to the Properties sub-panel. Step 7: For the Friction Parameters, keep the Sliding option. Step 8: Select the Fixed option. Step 9: Click the see button. Step 10:Click Save and then Close to return to the main menu.
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HyperWorks 10.0
Chapter 8: Quality Check
Chapter 8
Quality Check The purpose of this chapter is to show you how to use the Quality module in HyperCrash. Following the steps in Chapter 2, Section.1, load the model called CHPT7_0000. r ad.
Section 1: Check Intersections and Penetrations in Your Model Step 1: From the Pull-down Menu Bar , click Quality , then Check All Interfaces and wait for HyperCrash to find all the interfaces. This may take a few seconds.
Note:
You can check the interfaces one-by-one using the Check selected interface button in the Loadcase, Contact interf. Create/Modify menu.
Step 2: In the Quality Contact panel, toggle Intersection at the top of the panel and select the CAR_CAR interface.
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Step 3: On the lower part of the Contact panel, select one intersection at a time and view each in the Graphic Window .
Note: •
•
It is easier to see the intersections if the model is in Poly. + Line view (from the Display menu). You may also adjust the level of transparency using the Control transparency level icon (
Note:
).
Click the Refresh button ( ) if you want to return to a normal display. Select the CAR_CAR interface from the list at the top of the Contact panel.
Step 4: Click the Select/Unselect Al l button ( pairs.
) to select all the intersections in part
) to launch the automatic intersection Step 5: Click the Remove Intersections button ( correction. This may take a few seconds to complete.
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Chapter 8: Quality Check •
Initial state: 15 intersections in part pairs.
•
Int . shows the number of intersections in each part pair.
•
At the end of the automatic intersection correction, only two remain. Those intersections have to be corrected manually (see following).
Step 6: Click the first remaining intersection to highlight it. Step 7: Click one of the following buttons to move the nodes and remove the intersection. Click: to move one or several nodes in the plane defined by the neighboring elements to move one or several nodes in the plane defined by the first selected node and two other nodes to move one or several nodes along the normal of the plane defined by the first selected node and two other nodes to move one or several nodes in the plane defined by the screen
). If the problem is solved, the Step 8: Click the Recheck Intersections button ( intersection is removed from the list and HyperCrash automatically continues to the next intersection. If the problem is not solved, repeat the steps 7 and 8 in order to move the nodes and correct the intersection. Step 9: Validate the node picking and moving in the Dialog Menu Bar. Note:
While you are moving a node, the quality of elements around the node is shown in color: Green = good Orange = acceptable Red = bad
Note:
•
•
Sometimes, HyperCrash suggests displacements by displaying arrows:
To perform these displacements, click the Remove Intersections button ( move the nodes automatically. If you want to decline the proposed displacements, click the
HyperWorks 10.0
) to
button.
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•
If you want to delete an arrow, click the button, then click a node that displays an arrow (node is highlighted) in the Graphic Window, and validate with Yes in the Dialog Menu Bar .
) to check the penetrations and select Step 10: Click the Check Penetratio ns button ( the Penetrations toggle at the top of the panel to switch to the penetration page. Step 11: In the Gap Int erface field, the gap value input in the interface definition will be shown by default. Step 12: Click the Select/Unselect Al l button (
) to select all the penetrations.
Step 13: Click the Depenetrate auto button ( correction.
) to launch the automatic penetration
Step 14: Wait for HyperCrash to finish the correction process (this may take a few seconds). Note: •
•
There are two options to find and to correct the penetrations in HyperCrash: you may use either a variable or a constant gap. The variable gap option (if Gap_interface = variable) searches and corrects the penetrations, taking the actual thicknesses of the plates into account (coming from the PID). The constant gap option (if you enter a value for Gap_interface) uses a (userdefined) fixed value (the value might be the gap of your interface, for instance) to search and correct the penetrations.
At the end of the automatic penetration correction, 0 penetrations remain: all the penetrations are automatically corrected by HyperCrash.
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Section 2: Check the Thickn esses Step 1: In the Quality
Visu Thick. Sub-panel, enter 0. 1 for the Min value.
Step 2: Enter 5mm for the Max v alue. Step 3: Make sure to display and the Model and Click on Fit Model ( display the whole model in the Graphic Window .
) buttons to
Step 4: On the Visu Thick. Sub-panel, click the See/Update disp lay button ( display the iso-thicknesses in the Graphic Window .
Step 5: Click Close to close the Quality
) to
Visu Thick. panel.
Section 3: Check Your Model with the ModelChecker Step 1: From the Pull-down Menu Bar, click Quality , then ModelChecker .
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Step 2: HyperCrash displays a list of errors, warnings, and information about the model in the order of severity in the ModelChecker window. Step 3: Select the Loose nodes of springs error message and click the View only icon
(
) to display it in the Graphic Window .
). One node of the spring is highlighted in blue. Step 4: Click the Fit Model button ( This node is not connected to anything.
Step 5: In the ModelChecker panel, right-click the Correction button ( Modify Springs . Step 6: HyperCrash opens the Mesh Editing
Modify
Element
the Pick element(s) to select element(s) in li st button (
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) and select 1D sub-panel. Click
) and, in the Graphic
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Window , pick the spring to highlight it in red. Validate the selection with Yes in the Dialog Menu Bar . Step 7: Delete this unconnected spring by clicking the Delete selected element(s) button
( ) (you may have to enlarge the panel to see the Delete button). Confirm the deletion with Yes in the Dialog Menu Bar . Step 8: Click Close in the Mesh Editing Modify Element 1D sub-panel. HyperCrash returns to the ModelChecker after having updated the list. Step 9: In the ModelChecker sub-window, select the Rbody Master on element(s) error message.
Step 10: Right-click the Correction button ( opens the Mesh Editing Modify Note:
•
•
In the rigid body list, the green rigid bodies have a correct definition and the red ones have a bad definition. HyperCrash can automatically or semi-automatically correct the bad rigid bodies. A rigid body has a bad definition if: The master node is on an element. If there is y in the column under the icon the rigid body list, the corresponding rigid body is bad.
is greater than 0, the corresponding rigid body is bad.
The rigid body has just one or no slave nodes If the number in the column under the icon
•
in
One or more slave nodes belong to another rigid body If the number in the column under the icon
•
) and select Modify RBODY. HyperCrash Rigid Body panel.
is less than or equal to 1 (1 or 0), the corresponding rigid body is bad.
In the same rigid body, the master node is also selected as slave. If there is y in the column under the icon
, the corresponding rigid body is bad.
Step 11: In the rigid body list, select the first rigid body with an error and click it in the Graphic Window.
HyperWorks 10.0
to display
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This rigid body has only one slave node (one in the body is bad.
column). Therefore, the rigid
) to remove this rigid body. Step 12: Click the Delete selected rigid bodies button ( Confirm the deletion with Yes in the Dialog Menu Bar . Step 13: Select the next rigid body with an error and click ( Window .
) to display it in the Graphic
The master node of this rigid body is on an element (y in the therefore, the rigid body is bad.
column),
Step 14: In the rigid body list, right-click and select See Rbody Master o n element(s) in the pop-up menu to display the connected element in the Graphic Window .
Step 15: Click Save to automatically correct the rigid body.
The rigid body master node and the element node are disconnected. The rigid body master node is moved to the slave node center of gravity. The element node is included in the rigid body as a slave node. Step 16: Select the next rigid body with an error and click Window .
to display it in the Graphic
One slave node of this rigid body belongs to another rigid body (1 in the column), therefore, the rigid body is bad. Step 17: In the rigid body list, click the right mouse button and select See slave nodes in other Rbodies to display in blue the multiple slave node in the Graphic Window.
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) in the Step 18: Click the Ad d/Rem ov e no des by pi ck in g s elec ti on button ( Selection sub-panel and, in the Graphic Window , pick the slave node to unselect it. Confirm the unselection with Yes . Step 19: Click Save in the rigid body panel. Step 20: Select the last rigid body with an error and click Window .
to display it in the Graphic
The master node of this rigid body is also defined as slave for itself (y in the column), therefore, the rigid body is bad (incompatible kinematic condition). Step 21: Click Save in the rigid body page to automatically correct the rigid body.
The master node is removed from the slave node list. Step 22: Click Close in the Rigid Body sub-panel to return to the ModelChecker panel. Step 23: Click Close in the ModelChecker panel to return to the main menu.
) and Fit Model ( Step 24: Click Display All ( the Graphic Window.
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) buttons to display the whole model in
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Chapter 9: Replace Function
Chapter 9
Replace Function The purpose of this chapter is to quickly replace the right door of the model with a new one. Following the steps in Chapter 2, Section.1, load the model called CHPT8_0000. r ad. Step 1: In the Tree window, highlight the RI GHT DOOR assembly (in the DOORS assembly). Step 2: Click the right mouse button and, in the pop-up menu, select Replace, then RADIOSS. Confirm your choice for replacement clicking Yes in the Dialog Menu Bar .
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Step 3: In the 0000 .rad file to replace Part window, select the NEW_DOOR_0000. r ad model and click OK. It may take a few seconds for HyperCrash to update the model. Note: •
•
HyperCrash automatically recreates: the connections (spotwelds and bolts) the interfaces. (Only the interfaces involving the whole replaced system are kept and regenerated on the new system).
•
the added masses
•
the boundary conditions
•
the initial velocities
•
the loads (imposed velocities and forces)
•
the connected rigid bodies
•
the connected 1-D elements
Step 4: In the Replace System window, the list of the features rebuilt by HyperCrash is displayed:
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1 added mass 1 initial velocity
have been rebuilt on the new right door.
5 rigid bodies 1 interface Step 5: Check that these features have been recreated well by navigating from the Pulldown Menu to the following menus and viewing the listed items in the Graphic Window: •
Select LoadCase, then Ad ded Mass es, then Modify
•
Select LoadCase, then Contact Interfaces, then Create/Modify
•
Select LoadCase, then Initial Velocities, then Modify
•
Select Mesh Editing, then Rigid Body, then Modify
Step 6: Click Close to close the Replace System panel and return to the main menu.
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Chapter 10: Time History Selection
Chapter 10
Time History Selection Following the steps in Chapter 2, Section 1, load the model called CHPT9_0000.rad.
Section 1: TH Node Selection Step 1: From the Pull-down Menu Bar, click Data Histor y, then Node, then Create.
Step 2: In the Create TH Node panel, enter the name B-Pillar as shown in the following image and click Ok.
Step 3: In the Tree Windo w, highlight and display the part, B-PILLAR-INNER (in the Body in White
→
Body assembly) and click the Isolate Tree Selectio ns icon (
Step 4: Go back to the Data Histor y add button (
Node
).
Create panel and click the Pick nodes to
).
Step 5: In the Graphic Window, one node at the top of the B-Pillar and one at the bottom.
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Step 6: In the Dialog Menu Bar , click Yes to finish the selection. Step 7: When you finish the selection, the nodes are listed in the sub-window. Select the first one and click the See selected nod e icon to display it (
).
Step 8: In the Node name field, enter B-Pillar_Upper and click Ok to change the node name (see following image). Step 9: Select and rename the second node to B-Pillar_Lower. Click Ok (see following image).
Step 10:Click Save and then Close to return to the main menu
Section 2: TH Section Creation Step 1: From the Pull-down Menu Bar, click Data Histor y, then Section, then Create. Step 2: In the Section sub-panel, enter the name LEFT_RAIL and click Ok (see following image).
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Step 3: In the Tree Window, highlight the parts LEFT RAIL 1, LEFT RAIL 2, and LEFT RAIL 3 (in the assembly Body in White Frames). →
Step 4: Click the Isolate Tree Selectio ns button ( Step 5: Go back to the Data Histor y
Section
parts by box s election button (
). Create sub-panel and click the Ad d
).
Step 6: Drag a box to select the front left rail parts. Step 7: For the Section plane normal, select the in X toggle as shown in the following image (default value). Step 8: Enter 3950 for the X Position value (see following image).
Step 9: Click the See selectio n button (
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) to display the section.
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Step 10:Click Save and then Close to return to the main menu.
Section 3: TH Part Creation Step 1: From the Pull-down Menu Bar, click Data Histor y, then Part, then Create. Step 2: In the Part Create panel, enter the name TH-PART and click OK. Step 3: In the Tree Windo w, highlight the MODEL assembly. Step 4: Back in the Data Histor y button (
Part Create panel click the add selected part of tree
) to select all the parts.
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Chapter 10: Time History Selection
Step 5: Click Save and then Close to return to the main menu.
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HyperWorks 10.0
Chapter 11: Clean the Model
Chapter 11
Clean the Model The purpose of this chapter is to delete the unused objects in your model. Following the steps in Chapter 2, Section.1, load the model called CHPT10_0000. r ad. Step 1: From the Pull-down Menu Bar, click Mesh Editing , then Clean . Step 2: In the Clean panel, select the Al l option (see following image).
Step 3: Click the Clean button and then click Close to return to the main window.
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Chapter 12: Final Steps
Chapter 12
Final Steps Following the steps in Chapter 2, Section.1, load the model called CHPT11_0000. r ad.
Section 1: Export the Model Step 1: In the Pull-down Menu Bar, click File, then Export, then RADIOSS file 51….
Step 2: In the Write Blo ck Format 100 RADIOSS file window that appears, enter the name CAR35_2 and click OK (see following image).
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Step 3: In the Header of Radioss fi le window that appears, click Save Model.
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Chapter 12: Final Steps
Step 4: A window titled Writ e 0001.rad fi le, V100 window appears. In the Generalities tab, Title: field, enter the title OFFSET FRONT CRASH 35 mph . Enter all the parameters as shown in the following image, and click Write Engine File.
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Chapter 12: Final Steps
Section 2: Run th e Starter for this Model Step 1: From your computer’s start menu, open the Altair HyperWorks menu and select RADIOSS to open the RADIOSS Manager.
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Chapter 12: Final Steps
Step 2: In the Input file: field of the RADIOSS Manager, enter the path and file name of the model (Car 35_2_0000. r ad). From the pull-down menu, choose Starter , and click Run . Review the .out file for ERRORS, WARNINGS, TIME STEP, and TOTAL MASS.
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Chapter 13: Dummy Positioner
Chapter 13
Dummy Positioner The purpose of this chapter is to give you a basic overview of the tools available in the Safety module of HyperCrash. This module will show you how to position a dummy and generate a seatbelt. Note:
Restrictions to Altair dummies in block format.
Section 1: Load the Dummy Step 1: Open a new HyperCrash session, selecting an environment with the following units: kN_mm_ms_kg. Step 2: Load the model called SEAT_0000. r ad (From the Pull-down menu, choose File, then Import, then RADIOSS Fil e). Step 3: From the Pull-down Menu Bar, select Safety and click Dummy Positioner .
Step 4: In the Dummy Positioner panel, click the Dummy model list drop-down menu, and select New Dumm y to open the DummyMng panel.
H305 Step 5: In the DummyMng panel, select the File tab and click the H250D15BD00 dummy (see following image).
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Step 6: Click Validate. Step 7: The DummyMng Offset panel opens. Click OK to confirm the numbering of various entities in the dummy.
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Step 8: The merged dummy is highlighted in the Graphic Window. Click the Refresh button (
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) to return to a normal display.
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Section2: Position the Dummy Step 1: Set the References Points. 1. Click the Ref p oints button (default). 2. Enter the following H point coordinates, pressing ENTER in each field, as shown in the following image: Hx = 2470 Hy = 351 Hz = 663 3. Enter the Ry angle: - 15 degr ees (see following image) and press ENTER to validate.
Step 2: Modify the dummy coordinates to obtain the correct position. Note:
Use the View menu to modify the point of view.
1. To position the lower limbs, select the Lower limbs radio button. 2. In the Left leg section, select beta aroun d y in the Delta pop-up menu.
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3. Click the Mouse moving button (
).
4. In the Graphic Window click a node of the left foot and drag the foot to the desired position. Then click Yes or press ENTER. If the position is correct, press ESC. 5. Click the Finish (
) button.
6. For the right leg, you can directly enter the same value of the angle. In the Right leg section, select the beta aroun d y in the Delta pop-up menu. 7. Enter the value and click the Finish button (
) to validate.
Step 3: Repeat the same procedure to position the body and/or the upper limbs to obtain the final position.
Step 4: Click Close to close the Dummy Posit panel.
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Chapter 14: Seat Belt Generator
Chapter 14
Seat Belt Generator Step 1: From the Pull-down Menu Bar, select Safety and click Belt Generator .
Step 2: In the field provided, enter the name of the belt, BELT1, and click OK (see following image).
Step 3: Click the
button to define the reference points. A new panel appears.
) to select the seat belt reference points Step 4: Use the Ad d n od es by pi ck in g button ( on the dummy (see the picture, following), validate with Yes , and click OK when finished.
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Step 5: Select the parts which have to be interfaced with the belt (upper torso) by using the Ad d/r emo ve bo dy par ts by pi ck in g button ( press ENTER.
). When finished, click Yes or
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Chapter 14: Seat Belt Generator
Step 6: Leave the default values for belt generation except the first node transversal direction: Gap = 4mm Belt width = 50mm Number of elements i n length = 30 Number of elements in wid th = 3 Transversal direction at first node = X Transversal direction at last node = X Step 7: Click the Choose material in database button (
).
Step 8: In the Material File selection window, choose the FABRIC and click OK to validate in the Dialog Menu Bar . Step 9: Click the Choose property in database button (
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).
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Step 10: In the Property File selection window, choose the Seat _Bel t property and click OK to validate in the Dialog Menu Bar . Step 11: Click the See button to view the seat belt. Note: •
•
You can use the Options menu to adjust the interface between the torso and the belt (initial penetrations)
If the belt is not correct, redefine the reference points again.
Step 12: When the belt is correct, click Save to save it. Step 13: Repeat 0 to 0 to create a Lap Belt
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