机械弹性车轮稳态侧偏特性的理论与试验分析

摘要

Theoretical and experimental investigation on mechanical characteristics of steady-state cornering conditions of mechanical elastic wheel was carried out in order to master cornering properties of mechanical elastic wheel.The theoretical modeling process of steady-state cornering with small and large side-slip angle was discussed by fully considering the structure characteristics of mechanical elastic wheel and using the basic theory of brush model.Experimental analysis on steady-state cornering properties of mechanical elastic wheel was carried out by using tire dynamic mechanical properties test bench, and the relationship curves of the lateral force, aligning torque and side-slip angle were obtained.Simulation results of theoretical model were compared with the experimental data.Results show that the established theoretical model of steady-state cornering has high accuracy, and can express mechanical characteristics of steady-state cornering properties of mechanical elastic wheel.This investigation provides certain reference for the improvement of wheel structure and cornering properties.%为了掌握机械弹性车轮的侧偏特性,对车轮稳态侧偏工况下的力学特性进行理论及试验研究.基于机械弹性车轮结构特点以及刷子建模理论,建立不同侧偏角下车轮稳态侧偏理论模型.利用轮胎动态力学特性试验台架,对车轮样机进行稳态侧偏特性试验分析,得到了车轮侧向力、回正力矩与侧偏角的关系曲线.对比理论模型仿真与样机试验数据,结果表明:车轮稳态侧偏理论模型具有较高的预测精度,能够表达车轮稳态侧偏力学特性.该研究可为改进车轮结构及改善车轮侧偏性能等提供一定的参考.