汽车底盘零部件学习教案.pptx
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1、会计学1汽车底盘零部件汽车底盘零部件第一页,共36页。Structural Analysis Capabilitiesn nNormal Modesn nDynamicn nLinear&Nonlinear Staticn nBucklingn nFatiguen nCrashworthiness第1页/共36页第二页,共36页。Examples:第2页/共36页第三页,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 k
2、g(low weight)3,2 kg(cost optimized)50 kN/mm stiffness 35 kN buckling第3页/共36页第四页,共36页。Boundary conditions Stiffness/BucklingStress analysisConstrained indof 1-3Constrained indof 2-4Forces and/or Moments第4页/共36页第五页,共36页。Lateral ForceAccelerationBrakingCorner第5页/共36页第六页,共36页。Base 4-Link Trailing Arm/Wh
3、eel Carrier 5,4 kg(low weight)6,2 kg(cost optimized)6,9 kg第6页/共36页第七页,共36页。Boundary conditions StiffnessStress analyseConstrained indof 1-3Constrained indof 2Constrained indof 2Constrained indof 2-3Forces and/or Moments第7页/共36页第八页,共36页。647 MPa579 MPaCornerVertical Force第8页/共36页第九页,共36页。Base 4-Link U
4、pper 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 stiffness27 kN bucklingthickness:3,0 mm shell2,0 mm bushingmaterial:S 355 MC第9页/共36页第十页,共36页。Boundary conditions Stiffness/BucklingStress analysisConstrained indof 1-3Constrained indof 2-4Forc
5、es and/or Moments第10页/共36页第十一页,共36页。Calculated with linear elastic behavior of the material561 MPaPotholeTwist第11页/共36页第十二页,共36页。Base 4-Link Additional 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
6、 material:S 355 MC第12页/共36页第十三页,共36页。Calculated with linear elastic behavior of the material694 MPaPotholeCorner turn第13页/共36页第十四页,共36页。Boundary conditions Stiffness/BucklingStress analysisConstrained indof 1-3Constrained indof 2-4Forces and/or Moments第14页/共36页第十五页,共36页。1,3 kg(low weight)1,7 kg(cost
7、 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页第十六页,共36页。Boundary conditions Stiffness/BucklingStress analyseConstrained indof 1-6Constrained indof 1-6Forces and/or MomentsConstrained i
8、ndof 1-6Constrained indof 1-6第16页/共36页第十七页,共36页。CornerBraking第17页/共36页第十八页,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 shellmaterial:S 420 MC upper shellS 355 MC lower shell第18页/共36页第十九页,共36页。Boundary conditions Stiffne
9、ssStress analysisConstrained indof 3Constrained indof 3Forces and/or MomentsConstrained indof 2-3Constrained indof 1-3第19页/共36页第二十页,共36页。Longitudinal ForceLateral ForceBraking第20页/共36页第二十一页,共36页。Validation RequirementsFront Suspension Lower Control ArmsFront Suspension Lower Control ArmsMethod for C
10、omputing Static Stiffness(Front Lower Control Arm):Reported at ball joint center at x-and y-directionbetween two connection points第21页/共36页第二十二页,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 bodyFor Non-Isolat
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