摘要
利用多体动力学仿真试验技术,发现某SUV后悬架横向刚度偏低容易产生过度转向趋势的问题。针对该后悬架各硬点改变进行运动学仿真研究,将下拉杆前点降低30mm、上拉杆外移130mm及上拉杆后点提高30mm,可以弥补原车过度转向的问题,仿真结果提高了整车的操纵稳定性。通过对原车和改进后车辆进行操纵稳定性主观评价,结果是改进后车辆操纵稳定性得到很大改进,与仿真结果趋势一致,也验证了模型的正确性。该方法可以为新车悬架性能调校提供理论基础。
The rear suspension lateral stiffness of SUV is low by applying the method of multi -body simulation and test technology, so it can lead to the vehicle over-steer characteristics. The rear suspension kinematics simulation is researched by changing the rear suspension hard point. The result is showed as below： decreasing the front point of low rod 30mm,outward the two upper rod 130mm and incr-easing the rear point of upper rod 30mm by simulation can improve the vehicle handling stability characteristics. Through the subjective evaluation of the vehicle handling stability to the original and changing vehicle, the changed vehicle performance has been improved greatly. It is consistent with the simulation result. The simulation model is effectively verified by the test performance and can be made as the theoretical basis for the suspension design.
出处
《机械设计与制造》
北大核心
2013年第9期79-82,共4页
Machinery Design & Manufacture
关键词
五连杆非独立后悬架
K＆C特性
仿真试验
Five Rod Dependent Rear Suspension
K＆C Characteristics
Simulation Test
