麦弗逊悬架结构极限工况强度研究

Study on Macpherson Suspension Structure Extreme Strength

麦弗逊悬架结构在极限工况下的强度设计尤其关键。文章针对某款车的麦弗逊前悬架结构,通过试验和仿真相结合的方法进行前悬架系统结构及接口设计。其中Clevis支架与控制臂本体,采用基于LS-DYNA软件考虑应力三轴度的Gissmo失效本构搭建有限元模型,分析设计考虑安全碰撞的Clevis支架。结果显示,该悬架结构在极限条件下,满足控制臂屈曲设计要求,符合结构强度设计策略。

The strength design of macpherson suspension structure under extreme working conditions is particularly critical.In this paper,the mcpherson front suspension structure of a vehicle is designed,and the front suspension structure and interface are designed through the combination of test and simulation.For the Clevis bracket and the control arm body,the finite element model is established by using the Gissmo failure constitutive model based on LS-DYNA considering stress triaxiality,and the Clevis bracket considering safety collision is analyzed and designed.The results show that under the extreme conditions,the suspension structure meets the requirements of buckling of the control arm body and the requirements of structural strength strategy.