ANSYS多体动力学分析指南

MultibodyAnalysisGuideRelease12.0ANSYS,Inc.April2009Southpointe275TechnologyDriveANSYS,Inc.iscertifiedtoISO9001:2008.Canonsburg,[e-mail](T)724-746-3304(F)724-514-9494CopyrightandTrademarkInformation©2009SASIP,Inc.Allrightsreserved.Unauthorizeduse,distributionorduplicationisprohibited.ANSYS,ANSYSWorkbench,Ansoft,AUTODYN,EKM,EngineeringKnowledgeManager,CFX,FLUENT,HFSSandanyandallANSYS,Inc.brand,product,serviceandfeaturenames,logosandslogansareregisteredtrademarksortrademarksofANSYS,Inc.oritssubsidiariesintheUnitedStatesorothercountries.ICEMCFDisatrademarkusedbyANSYS,Inc.underlicense.CFXisatrademarkofSonyCorporationinJapan.Allotherbrand,product,serviceandfeaturenamesortrademarksarethepropertyoftheirrespectiveowners.DisclaimerNoticeTHISANSYSSOFTWAREPRODUCTANDPROGRAMDOCUMENTATIONINCLUDETRADESECRETSANDARECONFIDENTIALANDPROPRIETARYPRODUCTSOFANSYS,INC.,ITSSUBSIDIARIES,ORLICENSORS.Thesoftwareproductsanddocument-ationarefurnishedbyANSYS,Inc.,itssubsidiaries,oraffiliatesunderasoftwarelicenseagreementthatcontainspro-visionsconcerningnon-disclosure,copying,lengthandnatureofuse,compliancewithexportinglaws,warranties,disclaimers,limitationsofliability,andremedies,andotherprovisions.Thesoftwareproductsanddocumentationmaybeused,disclosed,transferred,orcopiedonlyinaccordancewiththetermsandconditionsofthatsoftwarelicenseagreement.ANSYS,Inc.iscertifiedtoISO9001:2008.U.S.GovernmentRightsForU.S.Governmentusers,exceptasspecificallygrantedbytheANSYS,Inc.softwarelicenseagreement,theuse,du-plication,ordisclosurebytheUnitedStatesGovernmentissubjecttorestrictionsstatedintheANSYS,Inc.softwarelicenseagreementandFAR12.212(fornon-DODlicenses).Third-PartySoftwareSeethelegalinformationintheproducthelpfilesforthecompleteLegalNoticeforANSYSproprietarysoftwareandthird-partysoftware.IfyouareunabletoaccesstheLegalNotice,pleasecontactANSYS,Inc.PublishedintheU.S.A.TableofContents1.IntroductiontoMultibodySimulation...................................................................................................11.1.BenefitsoftheFiniteElementMethodforModelingMultibodySystems............................................11.2.OverviewoftheANSYSMultibodyAnalysisProcess...........................................................................21.3.TheANSYS-ADAMSInterface.............................................................................................................31.4.LearningMoreAboutMultibodyDynamics.......................................................................................32.ModelinginaMultibodySimulation......................................................................................................52.1.ModelingFlexibleBodiesinaMultibodyAnalysis..............................................................................52.1.1.ElementChoicesforFlexibleBodies..........................................................................................62.2.ModelingRigidBodiesinaMultibodyAnalysis..................................................................................72.2.1.DefiningaRigidBody...............................................................................................................72.2.1.1.TypicalRigidBodyScenarios............................................................................................72.2.1.2.TargetElementKeyOptionSettingforDefiningaRigidBody............................................92.2.1.3.DefiningaRigidBodyPilotNode.....................................................................................92.2.1.4.DefiningRigidBodyMassandRotaryInertiaProperties..................................................102.2.2.RigidBodyDegreesofFreedom..............................................................................................112.2.3.RigidBodyBoundaryConditions...........................................................................................122.2.3.1.DefiningRigidBodyLoads.............................................................................................132.2.4.RepresentingPartsofaComplexModelwithRigidBodies......................................................132.2.5.ConnectingJointElementstoRigidBodies.............................................................................132.2.6.ModelingContactwithRigidBodies.......................................................................................142.3.ConnectingMultibodyComponentswithJointElements.................................................................142.3.1.JointElementTypes...............................................................................................................152.3.1.1.JointElementConnectivityDefinition............................................................................172.3.1.2.JointElementSectionDefinition....................................................................................182.3.1.3.LocalCoordinateSystemSpecificationforJointElements...............................................182.3.1.4.StopsorLimit