ANALYSIS AND OPTIMIZATION DESIGN OF THE VIBRATION OF E⁃TYPE MULTI⁃LINK REAR SUSPENSION SYSTEM

Taking the E⁃type multi⁃link rear suspension system of a domestic SUV as the research object,its topological structure and kinematic relationship were analyzed.The rigid⁃flexible coupling rear suspension system motion model was established by using Adams/Car and Hypermesh software.Taking the change of wheel camber and camber toe⁃in as the optimization objective,the coordinate values of the inner and outer points of the upper control arm and toe tie rod were set as design variables.Then,the design was optimized in Adams/Insight.Through the comparison of simulation curves before and after optimization,it is shown that the change of wheel camber and toe is reduced,and the kinematics characteristics are improved to some extent.At the same time,the accuracy of the simulation results is further verified in the actual vehicle suspension ride test.