Multibody Dynamics Simulations With Abaqus From SIMULIA

Multib Mul tibody ody Dynami Dynamics cs Simu Simulat lation ions s with Abaq Ab aqus us fr from om SIM SIMUL ULIA IA 8.5.2008 Martin Kuessner [email protected] Abaqu Aba qus s Deu Deutsc tschla hland nd Gmb GmbH H

Copyright 2008 Dassault Systèmes

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One Company, First Class Brands

3D MCAD

Virtual Product

Virtual Testing

Virtual PLM User Production Collaboration Experience 3D For ALL

Productive, easy to use 3D Design

Product Excellence

Engineering Quality

Production Performance

Collaborative Intelligence

Life Experience

DS Brands: delivering customer benefits through the whole value chain Multibody Dynamics Simulation with Abaqus, 8.5.2008 Copyright 2008 Dassault Systèmes

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Realistic Simulation “Define, Monitor and Control the Physical World”

VIRTUAL

REAL

Product & Process Knowledge

Production

Simulation Courtesy BMW

Multibody Dynamics Simulation with Abaqus, 8.5.2008 Copyright 2008 Dassault Systèmes

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SIMUL SIM ULIA IA – ou ourr ide identi ntity ty • What is SIMULIA? • SIMUL SIMULIA IA is the the Dass Dassaul aultt Syst Système èmes s brand brand tha thatt deliv delivers ers a scalab scalable le portfolio of Realistic Simulation solutions including: • Ab Abaq aqus us pr prod oduc ucts ts for for Unif Unifie ied d Fini Finite te Ele Eleme ment nt Ana Analy lysi sis s • Mu Mult ltip iphy hysi sics cs so solu luti tion ons s - Ne w! • Sim Simulat ulation ion Lif Lifecy ecycle cle Man Manage agemen mentt solu solutio tions ns - New! • SIMULIA SIMULIA is not not a compan company, y, product product,, or technology technology itself but a brand which is responsible for multiple products and technologies in the simulation domain. • Abaqus lives on as the name of our Unified FEA products


5 Product Strategy

• Unified FEA solutions for all users • Scal Scalab able le Unif Unifie ied d FEA FEA prod produc ucts ts an and d services services with Abaqus Abaqus quality quality

• Multiphysics for the most challenging customer applications • Open Open Mu Mult ltip iphy hysi sics cs plat platfo form rm an and d complete solutions for key problems

• Full Simulation Lifecycle Management • Coll Collab abor orat ativ ive e envir environ onme ment nt to man manag age e simulation processes, data and IP


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Multiphy Mult iphysics sics in Abaqus Abaqus Unif Unified ied FEA •

Abaqus Abaqus enables enables coupling coupling of multiple multiple fields fields

Electrical

Acoustics

Thermal

Structural Structural Structural

Piezoelectrical

Courtesy: Honeywell FM&T

Fluid flow


Courtesy Courtesy of Dr. Michelle Michelle Hoo Fatt (University of Akron)

Pore pressure

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Abaq Ab aqus us FE FEA A Produ Product cts s • Interactive Products (modeling and visualization) • Abaqus/CAE • Pr Proc oces ess s Au Auto toma mati tion on To Tool olki kitt • Abaqus for CATIA V5 • Analysis Products (finite element solution) • Abaqus/Standard • Abaqus/Explici icit


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What is Abaqus for CATIA V5? • End-to-end Abaqus modeler fully integrated in CATIA V5 • Preprocessing • Job subm bmis iss sion ion an and d monitoring • Postprocessing • Take advantage of the power of Abaqus and CATIA V5 • CATIA V5: Intuitive modeling of complex assemblies • Abaqus: Powerful analysis tools for linear and nonlinear FEA Multibody Dynamics Simulation with Abaqus, 8.5.2008 Copyright 2008 Dassault Systèmes

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Abaqus/CAE • Interactive, parametric, finite element modeler and results viewer • Hybrid (geometry & mesh based) FEA environment for maximum flexibility • The most complete and fastest graphical user interface for the dedica dedicated ted Abaqu Abaqus s user user • Direct interface to CATIA V4, Parasolid, IDEAS • Associative import from Pro/ENGINEER, CATIA V5 and SolidWorks


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Abaqus/Standard • Comprehensive linear & nonlinear implicit general purpose finite element analysis of structural, thermal, acoustic & mechanism simulations • Integration with Abaqus/Explicit provides maximum flexibility for multi-physics simulation (“Unified FEA”) • Sophisticated contact, failure, material modeling & other advanced nonlinear capabilities • High-performance High-performance direct and iterative solvers with support for shared and distributed memory configurations

customization • Powerful interfaces for user customization


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Abaqus/Explicit • Comprehensive explicit finite element analysis of structural, thermal, acoustic & mechanism simulations • Integration with Abaqus/Standard provides maximum flexibility for multi-physics simulation (“Unified FEA”)

High-performance solver with • High-performance support for shared and distributed memory configurations • Powerful interfaces for user customization


Courtesy BMW

Finite element based mult mu ltib ibod ody y dy dyna nami mics cs


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Mech Me chan anis ism m an anal alys ysis is • Mechanism analysis in Abaqus covers the broad class of analyses that include moving parts


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Connectors in Mechanism Analysis • Connectors are a fundamental ingredient in mechanism analyses • En Enfo forc rce e kin kinem emat atic ic con const stra rain ints ts • Allo Allow w joi joint nt flex flexib ibililit ity y • Model sophistica sophisticated ted interactio interactions: ns: joint stops stops (contac (contact), t), locking locking mechanisms, driven motion, internal force/moment controls, friction, etc.


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Mechanism Overview • Mechanism analysis comes in three categories: 1

Rigid components connected by joints: • Kin inem emat atic ic an anal aly ysis focusing on constraint forces • Mult Multii-bo body dy dyna nami mic c analysis focusing on inertia forces


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Mechanism Overview 2

Large (nonlinear) deformation of bodies connected by joints: • Comp Compon onen entt-le leve vell str stres ess s analysis


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Mechanism Overview 3

Small deformation bodies in geometrically nonlinear analysis connected by joints: • Linear el elastic flexibility in kinematic or multi-body dynamic analysis combined with rigid components or large deformation components


Connectors


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Connectors • Connectors model discrete, physical connections between bodies • Features include: • Kine Kinema mati tic c cons constr trai aint nts s • Orien Oriented ted spri spring, ng, dash dashpot pot,, and fric frictio tional nal beha behavio viorr • Joint st stops • Co Cons nstr train aintt forc forces es and and mom momen entt outp output ut • Joint failure • No degree degree of freedom freedom elimination elimination (connecto (connectors rs can be used used betwe between en rigid bodies) • Re Rela lati tive ve mo moti tion on a act ctua uati tion on • Inte Intern rnal al load load actu actuat atio ion n


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Connection Library Assembled

Basic translational

Basic rotational

BEAM

LINK

ALIGN

WELD

JOIN

REVOLUTE

HINGE

SLOT

UNIVERSAL

UJOINT

SLIDE-PLANE

CARDAN

CVJOINT

CARTESIAN

EULER

TRANSLATOR

RADIAL-THRUST

CONSTANT VELOCITY

CYLINDRICAL

AXIAL

ROTATION

PLANAR


FLEXIONTORSION

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Connector Support in Abaqus/CAE and Abaqus/Viewer • Full support of analysis functionality • Defi Defini niti tion on of of al alll conn connec ecti tion on typ types es,, behavior options, actuations, and output variables supported in Abaqus/CAE • Disp Displa lay y of of the the co conn nnec ecto torr orientation systems, important for debugging connection definitions • Full Full disp displa lay y and and anim animat atio ion no off results in Abaqus/Viewer


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Connector Support in Abaqus/CAE and Abaqus/Viewer


Logical-Physical Logical-Phys ical co-simulat co-simulation ion


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Mechatronics

In many cases: •

Sensors: collect data regarding the state of the mechanical system

•

Control modules: using the sensor information compute the necessary actuation to advance the mechanical system in the desired state

•

Actuators: apply the (mechanical) loading (e.g., electric motors, hydraulic pistons) computed by the control modules.


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Logical-Physical co-simulation •

Goal: provide a comprehensive, easy to use capability of modeling system level behavior

•

How: co-simulation between Abaqus and Dymola, both DS owned products. •

Abaqus Abaq us:: mode models ls the the phy physi sics cs in the the sys syste tem m such such as as mec mecha hanic nical al,, thermal, acoustics, etc. Provides sensors and actuators.

•

Dymola Dymola:: mod models els electr electronic onics, s, hydrau hydraulic lics, s, pne pneuma umatic tics s of the syste system m

Co-simulation


Substructures


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Rotating Substructures • Geometrically nonlinear analysis: • Substruc Substructures tures are valid valid for for large large rotatio rotations ns and and large large transla translations tions • Stres Stress s recove recovery ry occur occurs s in the curr current ent conf configu igurat ration ion • Strains are assumed small

Tie rod stress during crank rotation


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Substructure Model of a Pickup Truck • 1994 Chevrolet C1500 • Example pr problem: • 55,0 55,000 00 el elem emen ents ts in th the e fully-deformable model • 20 su substructures • 2 rigid bodies • 81 connectors • Anal Analys ysis is spee speed d up up by as much as 120 times

The FEM model is obtained from the Public Finite Element Model Archive of the National Crash Analysis Center at George Washington University (http://www.ncac.gwu.edu/archives/model/index.html) Multibody Dynamics Simulation with Abaqus, 8.5.2008 Copyright 2008 Dassault Systèmes

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1994 Chevrolet C1500 • In-phase bump


Summary


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Summary

• Fini Finite te Ele Eleme ment nt bas based ed mul multi tibo body dy dyna dynami mics cs • Im Impl plic icit it and and expli explici citt time time inte integra grati tion on • Allo Allows ws for for all all kinds kinds of nonl nonlin inear earit itie ies s • Cou Couplin pling g with with Contr Controls ols for exte extende nded d applic applicati ation on


T h a n k Multib Mul tibody ody Dyn amics cs Simu Simulat lation ions s y o u Dynami with f o r om Abaq Ab aqus us fr from SIMUL ULIA IA y o SIM u r 8.5.2008 a t t t e e n Martin Kuessner t i io n o [email protected] Abaqu Aba qus s Deu Deutsc tschla hland nd Gmb GmbH H


Multibody Dynamics Simulations With Abaqus From SIMULIA

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