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汽车底盘零部件CAE分析汽车底盘零部件CAE分析1StructuralAnalysisCapabilitiesNormalModesDynamicLinear&NonlinearStaticBucklingFatigueCrashworthinessStructuralAnalysisCapabiliti2Examples:Examples:3Base4-LinkLowerControlArm→3,2kg56kN/mmstiffness61kNbucklingthickness: 2,5mmmaterial: S355MC≤2,4kg(lowweight)≤3,2kg(costoptimized)>50kN/mmstiffness>35kNbucklingBase4-LinkLowerControlArm→4Boundaryconditions

Stiffness/BucklingStressanalysisConstrainedindof1-3Constrainedindof2-4Forcesand/orMomentsBoundaryconditionsStiffness5LateralForceAccelerationBrakingCornerLateralForceAccelerationBraki6Base4-LinkTrailingArm/WheelCarrier≤5,4kg(lowweight)≤6,2kg(costoptimized)→6,9kgBase4-LinkTrailingArm/Whee7Boundaryconditions

StiffnessStressanalyseConstrainedindof1-3Constrainedindof2Constrainedindof2Constrainedindof2-3Forcesand/orMomentsBoundaryconditionsStiffnessS8647MPa579MPaCornerVerticalForce647MPa579MPaCornerVerticalF9Base4-LinkUpperControlArm≤2,1kg(lowweight)≤2,7kg(costoptimized)>30kN/mmstiffness>20kNbuckling→1,94kg28kN/mmstiffness27kNbucklingthickness: 3,0mmshell 2,0mmbushingmaterial: S355MCBase4-LinkUpperControlArm≤10Boundaryconditions

Stiffness/BucklingStressanalysisConstrainedindof1-3Constrainedindof2-4Forcesand/orMomentsBoundaryconditionsStiffness11Calculatedwithlinearelasticbehaviorofthematerial561MPaPotholeTwistCalculatedwithlinearelastic12Base4-LinkAdditionalControlArm≤0,28kg(lowweight)≤0,36kg(costoptimized)>100kN/mmstiffness>39kNbuckling→0,34kg177kN/mmstiffness38,6kNbucklingthickness: 1,5mm

material: S355MCBase4-LinkAdditionalControl13Calculatedwithlinearelasticbehaviorofthematerial694MPaPotholeCornerturnCalculatedwithlinearelastic14Boundaryconditions

Stiffness/BucklingStressanalysisConstrainedindof1-3Constrainedindof2-4Forcesand/orMomentsBoundaryconditionsStiffness15≤1,3kg(lowweight)≤1,7kg(costoptimized)>25kN/mmstiffnessx>15kN/mmstiffnessyBase4-LinkBracket→1,23kg33kN/mmstiffnessx50kN/mmstiffnessythickness: 4,0mmmaterial: S355MC≤1,3kg(lowweight)Base4-Li16Boundaryconditions

Stiffness/BucklingStressanalyseConstrainedindof1-6Constrainedindof1-6Forcesand/orMomentsConstrainedindof1-6Constrainedindof1-6BoundaryconditionsStiffness17CornerBrakingCornerBraking18UplevelH-ArmLowerControlArm≤6,8kg(lowweight)≤9,5kg(costoptimized)→8,74kgthickness: 3mmuppershell 2,5

mmlowershellmaterial: S420MCuppershell S355MClowershellUplevelH-ArmLowerControlAr19Boundaryconditions

StiffnessStressanalysisConstrainedindof3Constrainedindof3Forcesand/orMomentsConstrainedindof2-3Constrainedindof1-3BoundaryconditionsStiffnessS20LongitudinalForceLateralForceBrakingLongitudinalForceLateralForc21ValidationRequirements

FrontSuspensionLowerControlArmsMethodforComputingStaticStiffness(FrontLowerControlArm):Reportedatballjointcenteratx-andy-directionbetweentwoconnectionpointsValidationRequirements

Front22ForAllCradles:ReportatallbushingandballjointcentersSteeringstiffnessshallbecomputedatthetie-relayballwitharigidbodyForNon-IsolatedCradles:SteeringshouldbeattachedrigidtothecrossmemberFrontcrossmembertobodyinterfacecenterpointsshouldbepinnedtogroundallowingrotationaboutthe(X,Y,Z)axisandnotranslationfromthesepointsForIsolatedCradles:UseGMCradleonMountDifferentialStiffnessMethodwithbushingrates(x=2KN/mm,y=2KN/mm,z=2KN/mm)Usesteeringbushingrates(x=10KN/mm,y=10KN/mm,z=1KN/mm).Firstcalculationwithanelasticcradle,secondwitharigidcradle.Subtractthetwodisplacementsandcalculatethestiffness.ValidationRequirements

FrontSuspensionCrossmembersMethodforComputingStaticStiffness:DOF(1,2,3)lockedForAllCradles:ForNon-Isolat23TOTALMASS= 21.85Kg.LateralTubes[2.6mmDP500]FrontTube[2.25mmDP500]Fr.ControlArmbrackets[3mmHR60]AttachmentstoBody[3.2mmstw22]UpperCrossmember[2.5mmHSLA360]LowerCrossmember[2.3mmHSLA360]EnginesupportFront[2.5mmstw22]Re.ControlArmsupport[3mmstw22]TOTALMASS= 21.85Kg.Lateral242.FEALinearLoadCasesResults REF.13219065Units:MpaStandingCar1GVerticalLoad3.5GLongitudinalLoad2GLateralLoad2GAccelerating0.5GBraking1.1GCornering1.2GBrakingTurn1.05GFrontTube46.376.8307.217.61.1270.233.264.LateralTubes22.064.6385.239.62.2395.246.240.FrontControlArmBracket24.876.8568.213.96.3694.233.472.UpperCrossmember35.8134.465.334.73.1382.309.396.LowerCrossmember34.9189.530.541.146.493.566.438.RearControlArmBracket11.747.0178.37.941.4255.55.1188.EngineSupportFront121.073.1104.178.133.77.1196.80.EngineSupportRear45.673.1314.297.74.9332.328.162.2.FEALinearLoadCasesResu253.FEALinearLoadCasesPlotsLoadCase:1GStandingCarREF.132190653.FEALinearLoadCasesPlot26LoadCase:3.5GVerticalLoad3.FEALinearLoadCasesPlotsREF.13219065LoadCase:3.5GVerticalLoad327LoadCase:2GLongitudinalLoad3.FEALinearLoadCasesPlotsREF.13219065LoadCase:2GLongitudinalLoa28LoadCase:2GLateralLoad3.FEALinearLoadCasesPlotsREF.13219065LoadCase:2GLateralLoad3.29LoadCase:0.5GAccelerating3.FEALinearLoadCasesPlotsREF.13219065LoadCase:0.5GAccelerating3.30LoadCase:1.1GBraking3.FEALinearLoadCasesPlotsREF.13219065LoadCase:1.1GBraking3.FEA31LoadCase:1.2GCornering3.FEALinearLoadCasesPlotsREF.13219065LoadCase:1.2GCornering3.F32LoadCase:1.05GBrakingTurn3.FEALinearLoadCasesPlotsREF.13219065LoadCase:1.05GBrakingTurn333Units:KN/mmXDirectionTargetXDir.YDirectionTargetYDir.ZDirectionTargetZDir.FrontControlArmBracketLeft19.945.12.2614.4.065.FrontControlArmBracketRight.20.205.12.5614.4.295.RearControlArmBracketLeft27.7720.59.8820.5.295.RearControlArmBracketRight27.5420.60.9720.5.5.EngineSupportFront9.439.5.155.2.013.5EngineSupportRear33.3310.18.115.2.393.5RackhouseMountLeft50.7625.55.2425.8.408.RackhouseMountRight48.6825.55.5525.7.468.StabilizerBarMountLeft52.6310.34.485.13.4216.StabilizerBarMountRight51.2810.30.585.12.8816.4.StaticStiffnessMeasurementNon–IsolatedBrackets REF.13219065Units:KN/mmXDirectionTarg34Frequency(Hz.)DescriptionMode1to60.RigidBodyMovesMode793.2FirstTorsionModeMode8153.85-Mode9169.86FirstCrossmemberbendingModeMode10253.65FirstLateralTubesbendingModeMode11321.0-Mode12329.9-Mode13366.9-6.ModalAnalysisFREE–FREEConfiguration REF.13219065Frequency(Hz.)DescriptionMode35Thankyou!Thankyou!36

Thankyou拯畏怖汾关炉烹霉躲渠早膘岸缅兰辆坐蔬光膊列板哮瞥疹傻俘源拯割宜跟三叉神经痛-治疗三叉神经痛-治疗拯畏怖汾关炉烹霉躲渠早膘岸缅兰辆坐蔬光膊列板哮瞥疹37汽车底盘零部件CAE分析汽车底盘零部件CAE分析38StructuralAnalysisCapabilitiesNormalModesDynamicLinear&NonlinearStaticBucklingFatigueCrashworthinessStructuralAnalysisCapabiliti39Examples:Examples:40Base4-LinkLowerControlArm→3,2kg56kN/mmstiffness61kNbucklingthickness: 2,5mmmaterial: S355MC≤2,4kg(lowweight)≤3,2kg(costoptimized)>50kN/mmstiffness>35kNbucklingBase4-LinkLowerControlArm→41Boundaryconditions

Stiffness/BucklingStressanalysisConstrainedindof1-3Constrainedindof2-4Forcesand/orMomentsBoundaryconditionsStiffness42LateralForceAccelerationBrakingCornerLateralForceAccelerationBraki43Base4-LinkTrailingArm/WheelCarrier≤5,4kg(lowweight)≤6,2kg(costoptimized)→6,9kgBase4-LinkTrailingArm/Whee44Boundaryconditions

StiffnessStressanalyseConstrainedindof1-3Constrainedindof2Constrainedindof2Constrainedindof2-3Forcesand/orMomentsBoundaryconditionsStiffnessS45647MPa579MPaCornerVerticalForce647MPa579MPaCornerVerticalF46Base4-LinkUpperControlArm≤2,1kg(lowweight)≤2,7kg(costoptimized)>30kN/mmstiffness>20kNbuckling→1,94kg28kN/mmstiffness27kNbucklingthickness: 3,0mmshell 2,0mmbushingmaterial: S355MCBase4-LinkUpperControlArm≤47Boundaryconditions

Stiffness/BucklingStressanalysisConstrainedindof1-3Constrainedindof2-4Forcesand/orMomentsBoundaryconditionsStiffness48Calculatedwithlinearelasticbehaviorofthematerial561MPaPotholeTwistCalculatedwithlinearelastic49Base4-LinkAdditionalControlArm≤0,28kg(lowweight)≤0,36kg(costoptimized)>100kN/mmstiffness>39kNbuckling→0,34kg177kN/mmstiffness38,6kNbucklingthickness: 1,5mm

material: S355MCBase4-LinkAdditionalControl50Calculatedwithlinearelasticbehaviorofthematerial694MPaPotholeCornerturnCalculatedwithlinearelastic51Boundaryconditions

Stiffness/BucklingStressanalysisConstrainedindof1-3Constrainedindof2-4Forcesand/orMomentsBoundaryconditionsStiffness52≤1,3kg(lowweight)≤1,7kg(costoptimized)>25kN/mmstiffnessx>15kN/mmstiffnessyBase4-LinkBracket→1,23kg33kN/mmstiffnessx50kN/mmstiffnessythickness: 4,0mmmaterial: S355MC≤1,3kg(lowweight)Base4-Li53Boundaryconditions

Stiffness/BucklingStressanalyseConstrainedindof1-6Constrainedindof1-6Forcesand/orMomentsConstrainedindof1-6Constrainedindof1-6BoundaryconditionsStiffness54CornerBrakingCornerBraking55UplevelH-ArmLowerControlArm≤6,8kg(lowweight)≤9,5kg(costoptimized)→8,74kgthickness: 3mmuppershell 2,5

mmlowershellmaterial: S420MCuppershell S355MClowershellUplevelH-ArmLowerControlAr56Boundaryconditions

StiffnessStressanalysisConstrainedindof3Constrainedindof3Forcesand/orMomentsConstrainedindof2-3Constrainedindof1-3BoundaryconditionsStiffnessS57LongitudinalForceLateralForceBrakingLongitudinalForceLateralForc58ValidationRequirements

FrontSuspensionLowerControlArmsMethodforComputingStaticStiffness(FrontLowerControlArm):Reportedatballjointcenteratx-andy-directionbetweentwoconnectionpointsValidationRequirements

Front59ForAllCradles:ReportatallbushingandballjointcentersSteeringstiffnessshallbecomputedatthetie-relayballwitharigidbodyForNon-IsolatedCradles:SteeringshouldbeattachedrigidtothecrossmemberFrontcrossmembertobodyinterfacecenterpointsshouldbepinnedtogroundallowingrotationaboutthe(X,Y,Z)axisandnotranslationfromthesepointsForIsolatedCradles:UseGMCradleonMountDifferentialStiffnessMethodwithbushingrates(x=2KN/mm,y=2KN/mm,z=2KN/mm)Usesteeringbushingrates(x=10KN/mm,y=10KN/mm,z=1KN/mm).Firstcalculationwithanelasticcradle,secondwitharigidcradle.Subtractthetwodisplacementsandcalculatethestiffness.ValidationRequirements

FrontSuspensionCrossmembersMethodforComputingStaticStiffness:DOF(1,2,3)lockedForAllCradles:ForNon-Isolat60TOTALMASS= 21.85Kg.LateralTubes[2.6mmDP500]FrontTube[2.25mmDP500]Fr.ControlArmbrackets[3mmHR60]AttachmentstoBody[3.2mmstw22]UpperCrossmember[2.5mmHSLA360]LowerCrossmember[2.3mmHSLA360]EnginesupportFront[2.5mmstw22]Re.ControlArmsupport[3mmstw22]TOTALMASS= 21.85Kg.Lateral612.FEALinearLoadCasesResults REF.13219065Units:MpaStandingCar1GVerticalLoad3.5GLongitudinalLoad2GLateralLoad2GAccelerating0.5GBraking1.1GCornering1.2GBrakingTurn1.05GFrontTube46.376.8307.217.61.1270.233.264.LateralTubes22.064.6385.239.62.2395.246.240.FrontControlArmBracket24.876.8568.213.96.3694.233.472.UpperCrossmember35.8134.465.334.73.1382.309.396.LowerCrossmember34.9189.530.541.146.493.566.438.RearControlArmBracket11.747.0178.37.941.4255.55.1188.EngineSupportFront121.073.1104.178.133.77.1196.80.EngineSupportRear45.673.1314.297.74.9332.328.162.2.FEALinearLoadCasesResu623.FEALinearLoadCasesPlotsLoadCase:1GStandingCarREF.132190653.FEALinearLoadCasesPlot63LoadCase:3.5GVerticalLoad3.FEALinearLoadCasesPlotsREF.13219065LoadCase:3.5GVerticalLoad364LoadCase:2GLongitudinalLoad3.FEALinearLoadCasesPlotsREF.13219065LoadCase:2GLongitudinalLoa65LoadCase:2GLateralLoad3.FEALinearLoadCasesPlotsREF.13219065LoadCase:2GLateralLoad3.66LoadCase:0.5GAccelerating3.FEALinearLoadCasesPlotsREF.13219065LoadCase:0.5GAccelerating3.67LoadCase:1.1GBraking3.FEALinearLoadCasesPlotsREF.13219065Load

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