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Autodesk Official Training Guide

Advanced

Autodesk Inventor

Professional 2010

Simulation Learn the fundamental principles and recommended workflows for analyzing designs and creating dynamic simulations.

462B1-050000-CM05A May 2009

2009Autodesk,Inc.Allrightsreserved.ExceptasotherwisepermittedbyAutodesk,Inc.,thispublication,orpartsthereof,maynotbereproducedinanyform,byanymethod,foranypurpose.Certainmaterialsincludedinthispublicationarereprintedwiththepermissionofthecopyrightholder.

TrademarksThefollowingareregisteredtrademarksortrademarksofAutodesk,Inc., intheUSAandothercountries:3DEC(design/logo),3December,3December.com,3dsMax,ADI,Alias,Alias (swirldesign/logo),AliasStudio,Alias|Wavefront(design/logo), ATC, AUGI, AutoCAD, AutoCAD Learning Assistance, AutoCAD LT, AutoCAD Simulator, AutoCAD S Q L E x t e n s i o n , AutoCAD SQL Interface, Autodesk, Autodesk Envision, Autodesk Insight, Autodesk Intent, AutodeskInventor, AutodeskMap, Autodesk MapGuide, Autodesk Streamline, AutoLISP, AutoSnap, AutoSketch, AutoTrack,Backdraft, Built withObjectARX(logo),Burn,Buzzsaw,CAiCE,CanYou Imagine,CharacterStudio,Cinestream,Civil3D,Cleaner,CleanerCentral,ClearScale, Colour Warper, Combustion, Communication Specification, Constructware,Content Explorer,Create>whats>Next>(design/logo),DancingBaby (image), DesignCenter, Design Doctor, Designers Toolkit, DesignKids, DesignProf, DesignServer, DesignStudio,Design|Studio (design/logo), Design Web Format, Discreet, DWF, DWG, DWG (logo), DWG Extreme, DWGTrueConvert,DWGTrueView,DXF,Ecotect,Exposure,ExtendingtheDesignTeam,FaceRobot,FBX,Filmbox,Fire,Flame,Flint, FMDesktop,Freewheel,Frost,GDXDriver,Gmax,GreenBuildingStudio,HeadsupDesign,Heidi,HumanIK, IDEAServer,idrop,ImageModeler,iMOUT,Incinerator,Inferno,Inventor,InventorLT,Kaydara,Kaydara(design/logo),Kynapse,Kynogon, LandXplorer, LocationLogic, Lustre, Matchmover, Maya, Mechanical Desktop, Moonbox, MotionBuilder,Movimento, Mudbox, NavisWorks, ObjectARX, ObjectDBX, Open Reality, Opticore, Opticore Opus, PolarSnap,PortfolioWall, Powered with Autodesk Technology, Productstream, ProjectPoint, ProMaterials, RasterDWG,Reactor,RealDWG, Realtime Roto, REALVIZ, Recognize, Render Queue, Retimer, Reveal, Revit, Showcase, ShowMotion,SketchBook, Smoke, Softimage, Softimage|XSI(design/logo), SteeringWheels, Stitcher, Stone, StudioTools, Topobase,Toxik, TrustedDWG, ViewCube, Visual, VisualConstruction, Visual Drainage, Visual Landscape, Visual Survey, VisualToolbox,VisualLISP,VoiceReality,Volo,Vtour,Wire,Wiretap,WiretapCentral,XSI,andXSI(design/logo).

The following are registered trademarks or trademarks of Autodesk Canada Co. in the USA and/or Canada andothercountries:Backburner,MultiMasterEditing,River,andSparks.

The followingareregisteredtrademarksor trademarksofMoldflowCorp. in theUSAand/orothercountries:MoldflowMPA,MPA(design/logo),MoldflowPlasticsAdvisers,MPI,MPI(design/logo),MoldflowPlasticsInsight,MPX,MPX(design/logo),MoldflowPlasticsXpert.Allotherbrandnames,productnames,ortrademarksbelongtotheirrespectiveholders.

Disclaimer

THIS PUBLICATION AND THE INFORMATION CONTAINED HEREIN IS MADE AVAILABLE BY AUTODESK, INC. AS IS.AUTODESK,INC.DISCLAIMSALLWARRANTIES,EITHEREXPRESSORIMPLIED,INCLUDINGBUTNOTLIMITEDTOANYIMPLIEDWARRANTIESOFMERCHANTABILITYORFITNESSFORAPARTICULARPURPOSEREGARDINGTHESEMATERIALS.

Publishedby:Autodesk,Inc.111MclnnisParkwaySanRafael,CA94903,USA

iii

Contents

Introduction................................................................................................ vii

Chapter1:IntroductiontoEngineeringAnalysis .......................................... 1Lesson:StressAnalysisOverview........................................................................ 2

AboutStressAnalysis................................................................................ 3StressAnalysisUserInterface................................................................... 6PerformingaStressAnalysis..................................................................... 9StressAnalysisFiles.................................................................................11Exercise:PerformaBasicStressAnalysis................................................ 13

Lesson:DynamicSimulationOverview............................................................. 15AboutDynamicSimulation..................................................................... 16TheDynamicSimulationInterface.......................................................... 20CreatingDynamicSimulations................................................................ 22Exercise:ReviewaCamValveSimulation............................................... 24

ChapterSummary............................................................................................. 28

Chapter2:StressAnalysis...........................................................................29Lesson:PreparingandRunningaSimulation.................................................... 30

SettingUpandRunningtheAnalysis...................................................... 31AddingLoads........................................................................................... 35AddingConstraints.................................................................................. 38

Exercise:CreateLoadsandConstraints.................................................. 42 Lesson:ViewingResults.................................................................................... 45

ResultTypes............................................................................................ 46 Exercise:ViewAnalysisResults............................................................... 50

Lesson:AnalyzingAssemblies........................................................................... 54Contacts...................................................................................................55Procedure:AnalyzingAssemblies............................................................59Exercise:DetermineStressinanAssembly.............................................62

Lesson:PerformingaParametricDesignStudy.................................................67PerformingaParametricStudy............................................................... 68Exercise:PerformaParametricStudy..................................................... 73

Lesson:MeshControlandConvergence....................................................... 76ConvergenceStudies........................................................................... 77StressSingularities.............................................................................. 79MeshSettings..................................................................................... 82AutomaticConvergence...................................................................... 84LocalMeshControl............................................................................. 88Exercise:DetermineifResultsareConverged.....................................91

Lesson:PerformingaModalAnalysis........................................................... 95PerformingaModalAnalysis.............................................................. 96Exercise:PerformaModalAnalysis.................................................. 101

ChapterSummary....................................................................................... 105

Chapter3:DynamicSimulation ............................................................. 107Lesson:CreatingJoints................................................................................ 108

AboutJoints...................................................................................... 109JointTypes........................................................................................ 113CreatingJointsAutomatically............................................................120CreatingJointsManually................................................................... 125JointCoordinateSystems.................................................................. 130Exercise:CreateJoints.......................................................................137

Lesson:DefiningLoadsandJointProperties...............................................143InitialJointPosition...........................................................................144JointTorque...................................................................................... 145JointMotion...................................................................................... 147ExternalForces.................................................................................. 150TheInputGrapher............................................................................ 155Exercise:DefineLoadsandJointProperties..................................... 164

Lesson:RunningSimulationsandAnalyzingResults................................... 172RunningSimulations......................................................................... 173TheOutputGrapher......................................................................... 177Exercise:CalculatetheDrivingTorqueoftheWiperAssembly......... 185

Lesson:BuildingNonredundantModels..................................................... 190AboutRedundantModels................................................................. 191LocatingRedundancies......................................................................192RepairingRedundanciesforConvertedConstraints.......................... 195Exercise:CreateaNonredundantModel.......................................... 199

Lesson:SharingDynamicSimulationResultswithStressAnalysis................................................................................