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卿1 International–2011 卿1DayOne:VehicleQuickVLMotionOverviewVLInternational–International–2011DrivingDynamicsandHalfvehicletest-rigVLExercise:Suspensionmodeland2DayTwo:FullVehicleInternational–2011FullVehicleAssemblyMotionInternational–2011FullVehicleHandlingStepSteerCase3 International–International–20114 InternationalInternational–201156 International–20116RR 1R恒定車速V下,質(zhì)心側(cè)偏角β、橫擺角速度ω隨車輪轉(zhuǎn)角δ1lInternational–20117RlRl12l121Ray 恒定車速V下,質(zhì)心側(cè)偏角β、橫擺角速度ω取決于車輪轉(zhuǎn)角δ1的聯(lián)合作用;而12取決于d(12)/International–20118部件間的靜態(tài)載荷變懸架側(cè)傾中心變懸架側(cè)傾剛度變方向盤轉(zhuǎn)角輸懸架垂向剛度變懸架KC車輪定位參數(shù)響車輪垂向跳輪心位移響International–2011車向車車向力轉(zhuǎn)向系統(tǒng)特性變International–2011InfluencingInternational–2011SuspensionSuspensionCamberCamberInternational–2011BaseSteeringBaseSteeringwheelToeWheel

TrackTracklTiresteerTiresteerVerticalTrackTrackSuspensionTest-RigExampleThesearepropertiesofhowthesuspensionThesearepropertiesofhowthesuspensioniscontrollingthewheelandtire,thereforethevehiclehandlingpropertiesandfeedbackthroughthesteeringsystemtothedriver.7BumpvsBumpvsBumpvsBump7BumpvsBumpvsBumpvsBumpvsBumpvs7. vs vs vs vsBaseToeCamberInternational–2011TiresteerTiresteerSuspensionSuspensionTest-RigExampleSteeringwheelSteeringwheelWheel

Thesearetestsusedtocharacterizethe sarechosenbythemagnitudeofthe thetirescangenerate)lload(parallellload(parallel/International–2011LongitudinalloadLongitudinalload@WC(parallel/lInternational–2011International–2011SuspensionReportingelementsHalfvehicletest-rigVLExercise:SuspensionmodelandVehicleVehicleCoordinateISO(X+ SAE(X+Aft(X+InternationalInternational–2011YYXZZQuickQuickReviewonTreeVirtual.LabisbuiltwithintheCATIAV5environmentInternational–2011CATIAtreeInternational–2011VLVLMotionaddsasecondbranchVLBasicBasicMotionBasicEachCATPartInternational–2011associatedInternational–2011BodiesareconnectedJointsandControlscanalsobelinkedtoBodies,andJointelements.SubsystemSubsystemInternational–2011International–2011s Vehicle ysis collectssubsystemInternational–2011International–2011 DesignTableModel International–2011DesignTableInternational–2011SuspensionSuspensionInterface:InterfacehelpsusercreateandmanageSuspensionsubsystemorganizingMulti-bodymodelintoPoints,PartsandInternational–2011International–2011SuspensionSuspensionInterface:workWithorWithoutManagesMirrorPartInternationalInternational–2011Creates LinkstoSuspensionSuspensionInterface:TreeViewandBasicBody–MasselementthathasalinktoaCADInternational–2011 s,Constraints–International–2011VSInterfacesthathelpEndUsercreateSuspensionSuspensionInterface:HardpointsdefinetheoriginandorientationofBodiesandInternational–2011PointscanbepickedfromInternational–2011WithintheGUIyoucanviewthecoordinatesinGlobalorrelativetothereferenceaxissystemSuspensionSuspensionInterface:AllowingSubsystemParts(Suspension,Steering,etc)toorienttheNCBFbyeitherPQR,BryantorEulerAngles.International–2011Massproperties(mass,CoGcoordinatesandinertiareferenceframeorientation,momentsofinertia)canInternational–2011Asymmetrycopycanbeeasilycreated,aswellasawireframegeometrybasedoninterfacehardpoints(thosewhicharereferencedbyanyconnectionsbetweentheconsideredpartandtheotherbodiesoftheSuspensionInterface:TheCoGlocationisalwaysdefinedintheNCBFaxissystem:itispossibleto yCoGcoordinatesinbothlocal(NCBF)andglobalreferenceframe.International–2011CG(AlwaysInternational–2011LocalGlobal

(NCBF)=GlobalSuspensionSuspensionInterface:International–2011ConnectionTabcontainsInternational–2011andconstraintsininterfacesBodyBodySuspensionSuspensionInterface:Foreachconnectionbushing(anddirection)bothlinearandnon-linearstiffnessanddamcharacteristicscanbeset,aswellas International–2011International–2011SuspensionSuspensionReporting TheSuspensionandVehiclereportingelementsarepre-packagedmathchannelsInternational–2011AlonglistInternational–2011Yaw l7.SuspensionSuspensionReportingTheelementsmustbemappedtoanexistingSuspensionsubsystemInternational–2011DefiningthewheelsInternational–2011SuspensionSuspensionReportingSuspensionInterfacecancreatetheSuspensionReportingelementsfromtheInternational–International–2011SuspensionSuspensionExerciseImportSuspensionFile teOrientNCBFfromSuspensionSetupSuspensiontest-rigSolveadynamiccase yzetheInternational–2011AddcustomerCADforInternational–2011clearanceInternational–International–2011International–2011International–2011PhysicaltestQuickVirtualTiremodelExercise:Virtualtest(generateplots)*Completed multipletire

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TireInternational–International–2011SteadySteadyStateComponentsoftheInternational–2011Manyfactorsdeterminethesteady-statevehicleattitude,howeverInternational–2011AckermanAckermanSteerm0.180lR sC,CT,AT,LLT,RS,LFCS,yInternational–International–2011SteerAngleSteadyStateNeutralSteer,Understeer,andInneutralsteer,nochangeinsteeringanglewillberequiredtonegotiateInneutralsteer,nochangeinsteeringanglewillberequiredtonegotiateaconstantradiusturnatincreasingspeedsAckermanSteerm0.180l s00SpeedInternational–International–2011SteerAngleSteadyStateNeutralSteer,Understeer,andInundersteer,increasingsteeringangleInundersteer,increasingsteeringanglewillberequiredtonegotiateaconstantradiusturnatincreasingspeedsm0.180l sRym0.180lR s00Speed(mph)International–International–2011SteerAngleSteadyStatem0.180m0.180lR s 0.180l sy00SpeedInoversteer,decreasingsteeringangleInoversteer,decreasingsteeringanglewillberequiredtonegotiateaconstantradiusturnatincreasingspeedsInternational–2011International–2011 Parent andSubmechanisms Virtual.Labhasamethodtoassemblysmallsubmodelsintoasinglemechanism.TheassemblyiscalledtheParentandthesubsystemsarecalled

InternationalInternational–2011

VehicleVehicleAssembly:MotionMotionAxisInternationalMotionAxisInternational–2011VehicleVehicleAssembly:MotionMotionPublicationsareusedforassemblyofSubmechanismsorcommunicationbetweenSubmechanismsMotionAxisAxisInternationalInternational–2011 VehicleAssembly:Vehicle ysisInterfaceassiststheUserwithcreationofdrivingdynamicInternational–2011International–2011 Vehicle ysis:Standard ISOandSteadyStateCircular(static)haveeventdialogsthatarededicatedonlytothatscenario.International–2011ISOInternational–2011 Vehicle ysis:InitialConditionsandRoad International–2011InitialConditionsareautomaticallyappliedtoallbodieslistedInternational–2011ARoadelementcanbespecifiedfromRoadtab,eitherGeneralorLeft/Righttype(differentroadprofilesforleftandrightside) Vehicle ysis:Steering IntheSteeringtabitispossibletodefineasteeringinputtothevehicle,toeithersteeringwheelorrack.TwodrivertypesInternational–2011KinematicSteeringInter

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