汽车底盘零部件.pptx
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1、Structural Analysis CapabilitiesNormal ModesDynamicLinear&Nonlinear StaticBucklingFatigueCrashworthiness第1页/共36页Examples:第2页/共36页Base 4-Link Lower Control Arm 3,2 kg 56 kN/mm stiffness61 kN bucklingthickness:2,5 mmmaterial:S 355 MC 2,4 kg(low weight)3,2 kg(cost optimized)50 kN/mm stiffness 35 kN buc
2、kling第3页/共36页Boundary conditions Stiffness/BucklingStress analysisConstrained indof 1-3Constrained indof 2-4Forces and/or Moments第4页/共36页Lateral ForceAccelerationBrakingCorner第5页/共36页Base 4-Link Trailing Arm/Wheel Carrier 5,4 kg(low weight)6,2 kg(cost optimized)6,9 kg第6页/共36页Boundary conditions Stif
3、fnessStress analyseConstrained indof 1-3Constrained indof 2Constrained indof 2Constrained indof 2-3Forces and/or Moments第7页/共36页647 MPa579 MPaCornerVertical Force第8页/共36页Base 4-Link Upper Control Arm 2,1 kg(low weight)2,7 kg(cost optimized)30 kN/mm stiffness 20 kN buckling 1,94 kg 28 kN/mm stiffness
4、27 kN bucklingthickness:3,0 mm shell2,0 mm bushingmaterial:S 355 MC第9页/共36页Boundary conditions Stiffness/BucklingStress analysisConstrained indof 1-3Constrained indof 2-4Forces and/or Moments第10页/共36页Calculated with linear elastic behavior of the material561 MPaPotholeTwist第11页/共36页Base 4-Link Addit
5、ional Control Arm 0,28 kg(low weight)0,36 kg(cost optimized)100 kN/mm stiffness 39 kN buckling 0,34 kg 177 kN/mm stiffness38,6 kN bucklingthickness:1,5 mm material:S 355 MC第12页/共36页Calculated with linear elastic behavior of the material694 MPaPotholeCorner turn第13页/共36页Boundary conditions Stiffness/
6、BucklingStress analysisConstrained indof 1-3Constrained indof 2-4Forces and/or Moments第14页/共36页 1,3 kg(low weight)1,7 kg(cost optimized)25 kN/mm stiffness x 15 kN/mm stiffness yBase 4-Link Bracket 1,23 kg33 kN/mm stiffness x50 kN/mm stiffness ythickness:4,0 mm material:S 355 MC第15页/共36页Boundary cond
7、itions Stiffness/BucklingStress analyseConstrained indof 1-6Constrained indof 1-6Forces and/or MomentsConstrained indof 1-6Constrained indof 1-6第16页/共36页CornerBraking第17页/共36页Uplevel H-Arm Lower Control Arm 6,8 kg(low weight)9,5 kg(cost optimized)8,74 kg thickness:3 mm upper shell 2,5 mm lower shell
8、material:S 420 MC upper shellS 355 MC lower shell第18页/共36页Boundary conditions StiffnessStress analysisConstrained indof 3Constrained indof 3Forces and/or MomentsConstrained indof 2-3Constrained indof 1-3第19页/共36页Longitudinal ForceLateral ForceBraking第20页/共36页Validation RequirementsFront Suspension L
9、ower Control ArmsMethod for Computing Static Stiffness(Front Lower Control Arm):Reported at ball joint center at x-and y-directionbetween two connection points第21页/共36页For All Cradles:Report at all bushing and ball joint centersSteering stiffness shall be computed at the tie-relay ball with a rigid
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