A calculation method of the loads in the hinge points of vehicle suspension system

作者：Shangguan, Wenbin; Dai, Lin; Lin, Haoting; Yu, Hong

来源：Qiche Gongcheng/automotive Engineering, 2014, 36(2): 222-230.

• Hinge point
• Load calculation
• Non-linear stiffness
• Static equilibrium equations
• Steering knuckle arms
• Strength and stiffness
• Suspension system
• Vehicle suspension systems

A calculation model for the loads in all hinge points (ball joint and bushing) of vehicle suspension system is built with consideration of the nonlinear stiffness in six DOFs. The calculation formulae for the forces in all hinge points of suspension system are given based on the force-displacement static equilibrium equations of control arm and steering knuckle arm. With the double-wishbone suspension system of a vehicle as example, three models are set up: one without consideration of control arm bushing, another one with consideration of only the translational stiffness of bushing and third one with consideration of both translational and torsional stiffness (nonlinear stiffness in six DOFs), and the forces in all hinge points of suspension system under typical and extreme loading conditions are calculated respectively. The results show that in extreme loading conditions, the forces in all hinge points can be calculated more accurately using the model with nonlinear stiffness in six DOFs, and the loads calculated can be used as load input in strength and stiffness calculations and fatigue test for all components in suspension system.

• 出版日期2014-2
• 单位华南理工大学