CATIA运动分析

CopyrightDASSAULTSYSTEMES1DMUKinematicsSimulatorCATIA/ENOVIATrainingFoilsCopyrightDASSAULTSYSTEMES2DMUKinematicsObjectivesoftheCourseInthiscourseyouwilllearntheDMUKinematicsSpecificToolsPrerequisites:DMUBasicDMUSpaceAnalysisTargetedaudienceDesigners0.5dayCopyrightDASSAULTSYSTEMES3TableofContentsPRODUCTSYNTHESISSOLUTIONS:DMUKinematics1-2TableofContents3GeneralProcess4CreatingMechanism5NamingaMechanism6CreatingJoints7AssociativeJoints8CreatingLaws9ImportingLaws10EditingJoints11ConvertingintoV5Mechanisms12ImportingSubMechanisms13ConvertingV4Kinematics14UpdatingConstraints15ConvertingAssemblyConstraints16BrowsingandSimulatingMechanisms17AnalyzingMechanisms18SimulatingMechanismswithCommands19SimulatingMechanismswithLaws20SequencingMechanismswithLaws21RecordingMechanisms22AnimationProcess23CreatingaSimulation24AnalyzingMovement25JointsLimits26MeasuringSpeedandAcceleration27SimulationOutputs28GeneratingaTrace29ComputingSweptVolume30CheckingClash31ManagetheMechanismDressup32CourseSummary33CopyrightDASSAULTSYSTEMES4GeneralProcessFromanassemblydocument,orawireframeassemblyBrowsetheMechanism3CreatetheJointsandeventuallydefinetheLaws1AnalyzetheResultsandModifyeventuallytheMechanismorthePart5OR…ConvertConstraints,orV4MechanismintoV5Mechanism2CreateaSimulationandaReplay4CopyrightDASSAULTSYSTEMES5CreatingMechanismYouwillbecomefamiliarwithMechanismdefinitionNamingaMechanismCreatingJointsAssociativeJointsCreatingLawsImportingLawsEditingJointsCopyrightDASSAULTSYSTEMES6NamingaMechanism•ClickaJointiconfromtheKinematics'JointsToolbar(firstjointofthemechanism)ItispossibletoassignanametoamechanismontheflyincreationmodeonlyTheJointCreationdialogboxisdisplayed•ClickNewMechanismTheMechanismNamingdialogboxisdisplayed•TypeanameandclickOKCopyrightDASSAULTSYSTEMES7CreatingJoints•Jointsdefinethebehaviorbetween2ormorecomponents•Youcandefinejointson3DelementsaswellasWireframeassembly,inordertovalidateaCinematicCopyrightDASSAULTSYSTEMES8AssociativeJointsAssociativeAxisSystemsforJointCreationAvailableforthesejointsIconNameResultingConstraintTypesRevoluteCoincidence:zaxis1/zaxis2andCoincidence:xyplane1/xyplane2PrismaticCoincidence:zaxis1/zaxis2andCoincidence:yzplane1/yzplane2CylindricalCoincidence:zaxis1/zaxis2SpericalCoincidencebetweenaxissystemsoriginsScrewCoincidence:zaxis1/zaxis2(+pitch)UjointCoincidencebetweenaxissystemsoriginsandangle90deg:xaxis1/zaxis2Abilitytokeepassociativityevenifyoumoveonepartinvolvedinthejoint.AssociativeU-jointusefulforparametricsuspensionCopyrightDASSAULTSYSTEMES9CreatingLawsOnceyouhaveaV5Mechanismthatcanbesimulated,youcanaddLaws,thatisalinkbetweenCinematicTimeandCommand(s)Mechanism.1\KINTime•DefinerulesandFormulasfromKnowledgefunctionsbetweenCinematicTime(KINTime)andthecommands•CheckformulaunitsCopyrightDASSAULTSYSTEMES10ImportingLawsWhenyouimportor«copyandpast»amechanims,lawsareimportedtooYoucaneditthecopiedmechanismsbydouble-clickingunderlawsinthespecificationtreeofyournewproduct:theformulaeditorappearsCopyrightDASSAULTSYSTEMES11EditingJointsInplayablemechanisms,itispossibletoreplacecurvejointsspecifications(pointorcurve).Modifyjointsandreassemble:Pt/curve,Slid/curveandRoll/curveInthespecificationtree,double-clickthejointtobemodified.TheJointEditiondialogboxisdisplayedandthegeometryhighlightedInthejointEditiondialogbox,selectthecurve(orpoint)youwanttobereplacedSelectthenewoneClickApplythenconfirmwithOKCopyrightDASSAULTSYSTEMES12ConvertingintoV5MechanismsYouwillbecomefamiliarwithMechanismdefinitionImportingSub-MechanismsConvertingV4MechanismsUpdatingConstraintsConvertingAssemblyConstraintsCopyrightDASSAULTSYSTEMES13ImportingSub-MechanismsImportMechanismsfromSubAssembliesThisfunctionisusefultoretrieveMechanismsfromsubCATProductsCopyrightDASSAULTSYSTEMES14V5MechanismConvertingV4KinematicsV4mechanismV4DataTypeV5ElementTypeD modelproductsetsub-product+associatedpartGeometrycontainedinthesetV4mechanismV5mechanismV4jointV5jointV4CommandV5CommandV4FixV5FixConversionofNumericalLawsCopyrightDASSAULTSYSTEMES15Updatingorregeneratingconstraintsisthewaytomovecomponentsintotheirassembledpositionsasspecifiedbytheconstraints.HerethecoincidenceconstraintisnotupdatedHerethecoincidenceconstraintisupdatedUpdatingConstraintsCopyrightDASSAULTSYSTEMES16ConvertingAssemblyConstraintsMoveConstrainedElementswithCompass•DragandDropCompassononeelement.PressShiftButtonwhilemovingtheGreenCompass.ThecomponentswillmoverespectingtheconstraintsCopyrightDASSAULTSYSTEMES17BrowsingandSimulatingMechanismsAnalyzingMechanismSimulatingMechanismwithCommandSimulatingMechanismwithLawsSequencingMechanisamswithLawsCopyrightDASSAULTSYSTEMES18AnalyzingMechanismsThistoolwillenableyoutoanalyzeaMechanismby:-GiveaMechanismassessment-Describingeachjoint-Showingwhatarethecommands-ShowingWhatisthefixedcomponent-ShowingPartsofbrokenjointsusinglowlightinthe3Dwindow-ShowingDressupassociatedtojoint-DisplayinglawsgraphwhenavailableDisplaythedegreeoffreedominthetree:Right-clickontheMechanisminthespecificationtreeandselectMechanism.object/ShowdegreeoffreedomCopyrightDASS