Multi-body dynamics simulations for mini-bus rollover tendency during sharp turns
Multi-body dynamics simulations for mini-bus rollover tendency during sharp turns
复制标题
DOI：
--
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
Ma Chunsheng
中科院分区：
文献类型：
--
作者：
Ma Chunsheng
虽然小客车侧翻事故的发生率不是很高，但此类事故的死亡率却很高。开发了多体动力学模型来分析小型客车动力学和急转弯稳定性。通过J型转弯和鱼钩虚拟试验获得了方向盘转角、横向加速度和轮胎垂直力之间的关系。对小客车侧翻的分析表明，这两种仿真工况下不发生侧翻的最大横向加速度均为1.0 g。通过单因素实验分析了小型客车结构、交通条件和外部条件对侧翻倾向的影响。结果表明，路面附着系数是最重要的参数，车辆重心等参数对侧翻倾向也有一定影响。这些结果可用于改进小型客车的重新设计、改进风险预测并减少交通事故的发生率。
Although the incidence of mini-bus rollover accidents is not very high, the fatality rate in such accidents is very high. A multi-body dynamics model was developed to analyze mini-bus dynamics and sharp turn stability. The relationships between the steering wheel angle, lateral acceleration, and tire vertical force were obtained using the J-turn and fish-hook virtual tests. Analysis of the mini-bus rollover shows that the maximum lateral acceleration for which rollover will not occur is 1.0 g for these two simulation conditions. The influences of mini-bus structure, traffic conditions, and external conditions on the rollover tendency were also analyzed in single-factor experiments. The results show that the road adhesion coefficient is the most important parameter with the vehicle's center of gravity and other parameters also having some influence on the rollover tendency. These results can be used to improve mini-bus redesigns, improve risk prediction, and reduce the incidence of traffic accidents.