基于载荷转移的爆胎汽车操纵动力学研究

Handling Dynamics for Vehicles with Punctured Tires Based on Load Transfer

通过分析爆胎引起的车轮半径变小进而引起汽车载荷转移的过程,建立爆胎汽车方向失稳动力学模型.通过研究汽车爆胎后车轮的滚动半径变化的影响,对爆胎汽车姿态变化而引起的载荷转移进行分析;及通过载荷转移结合轮胎特性所导致的各个车轮上的侧偏力大小对汽车行驶方向失稳影响的研究;根据轮胎模型应用魔术公式建立侧偏角与侧偏力的对应关系并建立爆胎汽车的操纵动力学模型.

In the paper,by analyzing the load transfer of vehicles caused by the wheel radius＇ decreasing due to the punctured tires,a dynamics model for direction instability for vehicles with punctured tires is established.Firstly,the impact of the rolling radius of the burst-tire wheel with direction instability is studied.Secondly,load transfer caused by the modes of vehicles with punctured tires is analyzed.Thirdly,the impact of the cornering force of each wheel on direction instability due to load transfer combined with characteristics of tires is also studied.Finally,according to tire models,Magic Formula is applied to establish the correlation between the lateral angle and the cornering force as well as a handling dynamics model.