基于多体动力学的ATV平顺性分析

Analysis of ATV ride comfort based on multi-body dynamics

讨论了全地形车(All-Terrain-Velicles,ATV)平顺性建模方法,应用多体动力学软件建立能反应手把处和座位处振动的刚柔耦合模型,总结了平顺性评价方法。在考虑发动机激励的情况下,对该车在随机路面输入下进行平顺性仿真。通过正交试验法探讨了悬架、座垫等参数对手把处和座位处振动的影响。结果表明,前后悬阻尼对座位处和手把处振动影响很大,但影响不一致,应进行合理配置。座垫的刚度阻尼对座位处振动影响较大,适当减小座垫刚度和阻尼是改善座位处振动的有效办法。

The modeling method of ATV ride comfort was discussed ,the multi-body dynamics software should be use to establish the rigid-flexible coupling model of hand reaction and seat vibration, and the evaluation method of tiding comfort was summarized. Under the condition of considering the excitation of the engine, the simulation of the ride comfort of the vehicle is carried out un- der the random road surface. The influence of parameters such as suspension and cushion on hand reaction and seat vibrations was discussed by the orthogonal test method. The results show that the damping of the front and rear suspension has a great influence on the vibration of the seat and the handle, but the effect is different, so should be a reasonable configuration. The stiffness and damping of the seat have great influence on the vibration of the seat. Properly reducing the seat stiffness and damping is an effec- tive way to improve seat vibration.