新型全地形车操纵稳定性仿真分析

Simulation of New All-terrain Vehicle Handling Stability

以某四轮全地形车数字样机为基础,设计新型三轮全地形车。基于Adams建立动力学模型,进行稳态回转、角阶跃输入和蛇行试验等操纵稳定性仿真试验。与四轮全地形车比较,在稳态回转仿真中新型全地形车随车速的提高不足转向量增加,角阶跃输入下响应较快,但蛇行试验中侧倾角加速度偏大。

A new model of three wheel all terrain vehicles（ATV） is built by modifying an old model of all terrain vehicles.Further,,a multi-body-dynamic model of all terrain vehicles for analyzing handling stability based on the controllability and stability testing procedures for automobiles,steady static circular simulation,steering wheel angle step input simulation and snake steer roll simulation is built by using the software Adama.The results indicate that the new ATV under-steer has the continuous improvement of speed,faster response of steering wheel angle step input,and high roll angular acceleration.