R-W方法是多刚体系统动力学中的主要方法之一,本文应用此方法进行汽车悬架系统的空间运动分析。文中讨论了多体系统模型的建立及简化方法,推导出树形系统运动学关系式,并以单斜臂、滑柱摆臂式悬架为实例给出了计算结果。工程应用的实践表明,用此程序进行汽车悬架运动分析,所得结果精确、计算迅速,具有较高的实用价值。 R-W method is one of the main methods in multi-body system dynamics. In this paper, this method is used to analyze the spatial motion of the vehicle’s suspension system. In this paper, the establishment and simplification of multi-body system model are discussed. The kinematics relation of the tree system is deduced. The calculation results are given by taking the single-arm arm and strut-arm suspension as an example. The practice of engineering application shows that this procedure can be used to analyze the motion of automobile suspension. The results obtained are accurate, calculated quickly and have high practical value.