基于ADAMS的方程式赛车前悬架仿真与优化

Simulation and Optimization of Front Suspension of Formula Racing with ADAMS

根据大学生方程式赛车比赛要求,设计了赛车前悬架几何结构。为了优化赛车操作稳定性,利用CATIA软件建立了前悬架二维几何,得到前悬架主要硬点坐标;在ADAMS/Car模块中建立了前悬架虚拟仿真样机,设置仿真参数后进行前悬架双轮同向激振仿真;在ADAMS/Insight中做灵敏度分析,获得灵敏度较高的变量后进行二次双轮同向激振仿真。通过对比优化前后的前轮定位参数随轮跳的变化趋势发现:优化后的前轮定位参数能在合理范围内变化,赛车操作稳定性得到一定的提高。

This paper designs the geometry of the front suspension of the racing car according to the requirements of Formula Student China. In order to optimize the stability of the racing car, a 2-dimensional geometry of the front suspension was established using CATIA software, and the main hard point coordinates of the front suspension were obtained. A front suspension virtual simulation prototype was established in the ADAMS/Car module. After setting the simulation parameters, two-wheeled forward excitation simulation of the front suspension was carried out. Sensitivity analysis was performed in ADAMS/Insight to obtain a high-sensitivity variable and then perform two-wheel synchronous excitation simulation again. By comparing the change trend of the front wheel positioning parameters before and after optimization with the wheel jumping, it shows that the optimized front wheel positioning parameters can be changed within a reasonable range, and the stability of the racing operation is improved.