风挡连接装置对列车动力学性能的影响

论述了各种风挡的动力学建模处理过程，结合单节客车动力学计算模型，以三节客车作为一个列车单元建立了列车动力学计算模型。通过求解描述列车系统的运动微分方程组，得出了列车蛇行运动稳定性、动态曲线通过性能及运行平稳性等方面的一系列数值仿真结果。计算结果表明，列车的失稳一般由尾车尾部转向架的蛇行失稳引起；列车的曲线通过性能随着曲线通过速度的提高、曲线半径的减小而迅速降低；中间车的运行平稳性明显优于头车和尾车；密接式风挡的运行平稳性最差，因此建议加装缓冲装置以提高装备密接式风挡动列车的动力学性能。

Effect of vestibule diaphragm device on train dynamic performance

The modelling of vestibule diaphragm was discussed. Based on the dynamic model of a single passenger car, a train dynamic model with three passenger cars was derived. By solving the differential equation groups to describe the train system, a series of simulation results about hunting motion stability, dynamic negotiation and ride comfort were worked out. The results show that the hunting motion of the train is due to the last bogie of the last car; the negotiation ability gets worse with the increasing of curving speed and the decreasing of curve radius; the ride comfort of the middle car is better than that of the head car and the tail car; the ride comfort of the train with tightlock vestibule diaphragm is the worst. It is suggested that the cushioning device should be added to the train with tightlock vestibule diaphragms. 6 tabs,6 figs,8 refs.