汽车底盘零部件CAE 共37页
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thickness:1,5 mm material: S 355 MC
694 MPa
Pothole
Calculated with linear elastic behavior of the material
Corner turn
Hale Waihona Puke Baidu
Boundary conditions
Stress analysis
thickness:3 mm upper shell 2,5 mm lower shell
material: S 420 MC upper shell S 355 MC lower shell
Boundary conditions Stiffness
Stress analysis
Constrained in dof 1-3
Stiffness / Buckling
Constrained in dof 1-3
Constrained in dof 2-4
Forces and / or Moments
Base 4-Link Bracket
≤ 1,3 kg (low weight) ≤ 1,7 kg (cost optimized) > 25 kN/mm stiffness x > 15 kN/mm stiffness y
→ 1,23 kg 33 kN/mm stiffness x 50 kN/mm stiffness y
thickness:4,0 mm material: S 355 MC
Boundary conditions
Constrained in dof 1-6
Stress analyse
Stiffness / Buckling
Constrained in dof 2
Constrained in dof 2
Constrained in dof 2-3
Forces and / or Moments
Corner
579 MPa
Vertical Force
647 MPa
Base 4-Link Upper Control Arm
Corner
Base 4-Link Trailing Arm/ Wheel
≤ 5,4 kg (low weight) ≤ 6,2 kg (cost optimized) → 6,9 kg
Carrier
Boundary conditions
Stress analyse
Stiffness
Constrained in dof 1-3
≤ 2,4 kg (low weight) ≤ 3,2 kg (cost optimized) > 50 kN/mm stiffness > 35 kN buckling
→ 3,2 kg 56 kN/mm stiffness 61 kN buckling
thickness:2,5 mm material: S 355 MC
Boundary conditions
Stress analysis
Stiffness / Buckling
Constrained in dof 1-3
Constrained in dof 2-4
Forces and / or Moments
Lateral Force
Acceleration
Braking
Constrained in
dof 3
Constrained in
dof 3
Constrained in dof 2-3
Forces and / or Moments
Longitudinal Force
Braking Lateral Force
Validation Requirements
Front Suspension Lower Control Arms
Twist
561 MPa
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 stiffness 38,6 kN buckling
汽车底盘零部件CAE分析
Structural Analysis Capabilities
Normal Modes Dynamic Linear & Nonlinear Static Buckling Fatigue Crashworthiness
Examples:
Base 4-Link Lower 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 27 kN buckling
thickness:3,0 mm shell 2,0 mm bushing
Constrained in dof 1-6
Constrained in dof 1-6
Constrained in dof 1-6
Forces and / or Moments
Corner
Braking
Uplevel H-Arm Lower Control Arm
≤ 6,8 kg (low weight) ≤ 9,5 kg (cost optimized) → 8,74 kg
Method for Computing Static Stiffness (Front Lower Control Arm):
Reported at ball joint center at x- and y-direction between two connection points
material: S 355 MC
Boundary conditions
Stress analysis
Stiffness / Buckling
Constrained in dof 1-3
Constrained in dof 2-4
Forces and / or Moments
Pothole
Calculated with linear elastic behavior of the material