前轮摆振机理分析

Mechanism Analysis of the Front Wheel Shimmy

轮胎的能量反馈是前轮摆振发生的主要原因,对应于车轮摆振的试验工况建立了摆振动力学模型并进行了仿真研究,分析了摆振中地面施加给轮胎的侧向力及回正力矩在非等幅运动中所做的功,从路面-轮胎系统体现出的负阻尼特性阐述了前轮摆振发生及发展的机理。

The energy feedback of the tire is the main reason for the front wheel shimmy. Pendulum vibration mechanics model was established corresponding to the wheel shimmy test conditions and a simulation study was car- ried out for this model, the work which were done by tire lateral force and aligning moment imposed by ground was analyzed in the non-equal amplitude movement the occurrence and development mechanism of the front wheel shimmy were expounded by negative damping characteristics which were reflected from the road-tire system.