麦弗逊式独立悬架运动特性

Study on Characteristic of McPherson Front Suspension

利用柔性多体动力学方法建立了基于 ADAMS软件平台的麦弗逊式独立悬架动力学仿真分析模型。利用该模型对某车辆前麦弗逊式独立悬架的运动学特性进行了仿真和试验对比分析。结果表明 :悬架构件的柔性对悬架运动中车轮定位参数的变化有明显的影响 ,与实测值相比 ,采用多柔体模型对悬架运动特性参数进行仿真计算的精度比采用多刚体模型的精度高得多。柔性多体悬架动力学仿真模型 ,为车辆设计阶段准确预测计及悬架影响因素时的汽车操纵稳定性提供了有效方法。

Using the method of flexible multi-body dynamics, this article established a dynamically analytical model for a McPherson independent suspension based on ADAMS software platform. The simulation and testing study of the kinematical characteristic of a McPherson front independent suspension fixed in a typical vehicle were carried out by the model. The results showed that the flexibility of the suspension part had apparent effects on the changes of wheel alignment parameters in the motion of the suspension. Compared with the testing data, the simulating precision of kinematical characteristic parameters of the suspension from the flexible multi-body model was more accurate than that from the rigid multi-body model.