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建立了某款客车侧向、横摆和侧倾的3自由度动力学数学模型,进行了该客车的静态稳定性因子和静态侧翻稳定角的计算,以及动态鱼钩试验和双移线试验的仿真对比。结果表明,静态工况下计算得出的客车所能达到的车辆侧向加速度要比动态工况下的大,客车在极限工况下容易发生侧滑或横摆失稳,发生绊倒侧翻的可能性大于非绊倒侧翻。
A 3-DOF dynamic mathematical model of lateral, yaw and roll of a passenger car was established. The static stability factor and static roll stability of the bus were calculated, as well as the dynamic hook test and double-shift test Simulation comparison. The results show that under the condition of static condition, the calculated lateral acceleration of the passenger car is larger than that under the dynamic condition, and the passenger car is prone to side slip or yaw instability under the extreme condition, More likely than non-tripping rollover.