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Materials for sour service (upstream applications) Specification for design
This workshop assumes little or no prior experience of DesignModeler. Basic principles will be demonstrated through the creation of a simple pipe intersection.
Objectives •
Creating a Workbench project
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Starting DesignModeler
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Creating a sketch
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Creating 3d geometry
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Updating and modifying geometry
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GUI navigation
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Saving the project
Project Startup Create the Project Start Workbench.
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Start All Programs Workbench 17.0
ANSYS 17.0
Expand Component Systems and drag and drop a Geometry component system into the Project Schematic. Double click on the Geometry cell (A2) to start Design Modeler.
Preparation Planning •
Before starting it’s a good idea to think about how the geometry can be defined in terms of sketches and modelling operations. – Sketches are 2D entities. 3D Geometry is created by applying modelling operations using the sketches as input.
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This basic geometry can be defined by two simple sketches centred about the global origin. The larger of the two can then be extruded vertically whilst the smaller extruded horizontally.
Set Unit System Set Units •
In this session we will be using inches.
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Go to Units tab and select Inch.
Units
Inch
1st Sketch Creation Create a Sketch In the Tree Outline, select the XY Plane. •
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Click the Look At button in the toolbar.
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Select the Sketching Mode Tab.
– This will display the Sketching Toolboxes Each toolbox expands by clicking on it and displays the available tools. Select the Draw Toolbox.
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Tips and Tricks : You can directly click on “Look At” button for 1st sketch creation of any plane and jump to Sketching mode For 2nd sketch creation on the same plane you have to click on “new sketch” icon
Sketch Creation Create a Sketch (Continued) Select the Circle Tool.
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When any sketching tool is selected the information bar provides instructions. Move the cursor over the origin until a letter ‘P’ appears then click once (‘P’ is a point constraint). Move the cursor away from the origin to define the radius and click once again. Don’t worry about the exact size, dimensions are added in a separate step. You can use the Undo button if you make a mistake.
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Sketch Creation Adding Dimensions •
Select the Dimensions Toolbox
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Make sure the ‘General’ tool is selected.
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Follow the sequence shown below. 1. Click once on the circle edge. 2.
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Move the cursor away and click once again to set the position of the dimension.
2 Add on Info : The General dimension tool automatically selects the most appropriate dimension type based on the selected sketch entity – in this case, diameter
Sketch Creation Adding Dimensions •
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When working with a sketch, dimensions are displayed in the details view. Enter 4 in the Sketch Details View in the field next to the newly created dimension (D1) and press enter. There is no need to type the units, the sketch will update.
Sketch Creation Create the Second Sketch Click the ISO ball on the axis triad to snap to the isometric view.
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We can see that the larger circle must be created on the ZX Plane.
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Change the Active Plane to the ZX Plane using the drop down box.
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The view will automatically orientate.
Sketch Creation Create the Second Sketch Create a circle centred on the ZX Plane origin and add a dimension using the same procedure as before. As a reminder;
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Select the Draw Toolbox. Select the Circle tool. Click on the origin, then click to define the radius. Select the Dimension Toolbox. Select the General tool. Click on the circle then click to position the dimension. Set the Dimension to 6 and select the ‘Modeling’ Mode tab.
Modeling Operations View Both Sketches Expand both the XY and ZX Planes in the Tree Outline as shown.
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The two sketches you have just created are listed below their respective planes.
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By default only the last active sketch is displayed. Right click on each sketch i n the Outline Tree and select “Always Show Sketch” to ensure both are displayed.
Select the isometric view by clicking the iso ball. Check you have two sketches orientated as shown.
Modeling Operations Add a Modeling Feature •
Click on Sketch 1 in the Tree Outline and select the Extrude feature from the Create menu.
The Extrude command will be inserted into the Tree Outline. Commonly used features also have shortcut buttons in the toolbar.
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Modeling Operations Add a Modeling Feature (Continued) •
In the Details View set the extrusion depth to 14.75
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other fields set at default values.
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Click Generate.
Modeling Operations Add a Modeling Feature (Continued) •
Now we’ll create remaining section by extruding the second sketch.
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Click on Sketch 2 in the tree and select the Extrude feature again from the create menu or toolbar.
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Because the sketch lies in the middle of the required geometry we’ll need to extrude it symmetrically by an equal distance.
In the Details View set Direction to ‘Both Symmetric’ by clicking in the field and using the drop down box.
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Set the extrusion depth to 14.
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Click Generate.
Review Notes •
The geometry is now complete
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The following slides will demonstrate how DesignModeler processes changes in sketch dimensions and general GUI operations.
Save the Project •
This completes the workshop.
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From the main menu select File
Close DesignModeler
– Workbench will save any application data. •
From the Workbench Project Page use the file menu and save the project as “DMWS1.1.wbpj” to your working folder.
Additional Tasks
Modifying the Geometry Edit a Sketch Dimension Select Sketch 1 in the Tree Outline.
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In the Details View change the dimension to 2, press enter.
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Note that the sketch updates in the Graphics Window but the Geometry remains the same. When a change is made like this any dependent features downstream in the Tree Outline will require regeneration – denoted by the generate symbol. Click Generate. Reset the dimension to 4 and Generate to restore the geometry.
Using the GUI Controlling the View •
Use the Axis Triad to quickly align views.
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Select +Z.
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+Z view
Selecting the opposite side of any axis will align the view to the reverse normal – select –Y as shown. Click the View Back button. -Y view
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Restore isometric by click the ISO ball.
Using the GUI (2) Rotating & Zooming Set the cursor to Rotate.
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Click once on the geometry surface approximately where indicated.
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The red ball indicates the new rotation origin location. The model will now rotate around this point. Use the box zoom button to zoom in as shown.
Right click in the Graphics Window, select Zoom to Fit to restore the default zoom level. Use the iso ball to set the view to
Using the GUI (3)
Hiding Faces •
Set the Selection Filter to Faces.
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Select the face as shown. Right click, Hide Face(s). To restore, right click, Show all Faces.
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Spend some time practising using the view manipulation tools demonstrated over the last few slides. With larger, complex models proficiency with the viewing controls will make tasks much easier.
