三模块Tram-train列车相对水平转角研究

Research on relative horizontal angles of three module Tram-train

文章首先介绍了一种三模块Tram-train列车,然后建立了该车型130个自由度的三维动力学模型,进一步对圆曲线、S曲线运行时的转向架/车体、车体/车体间的相对转角进行了分析。另外,对影响车辆相对转角的一些关键参数进行了研究,包括圆曲线中车辆的不同运行速度、中间车定距、缓和曲线长度,以及S曲线中不同曲线半径、夹直线长度等参数。通过分析可以看出:当车辆处于圆曲线的稳态圆曲线上时,中间车辆的两转向架相对转角明显大于前后端两转向架,当车辆处于缓和圆曲线时,前后端转向架在缓和曲线与圆曲线连接处具有明显冲击,而中间两转向架不受影响。当车辆运行于S曲线线路上时,前后端转向架在直线与稳态圆曲线连接处冲击影响显著,且明显大于稳态圆曲线上的最大相对转角。车辆运行速度对相对转角影响不大,而中间车定距和曲线半径影响显著,S曲线夹直线长度对相对转角影响较大,随着夹直线长度增加,相对转角先降低后趋于稳定,且有一个最佳夹直线长度。

This paper first presents a three module Tram-train,then establishes a three-dimensional dynamic model with 130 degrees of freedom,and further analyzes the relative angles of bogie/car body and car body/car body running in C-curve and S-curve.In addition,some key parameters that affect the relative angle of vehicle are studied,including the different running speed,middle vehicle alignment and curve radius of vehicle in C-curve,and the different curve radius and clip line length in S-curve.It can be seen from the analysis that when the vehicle is on the circular curve of C-curve,the relative angle of the two bogies of the middle vehicle is obviously larger than that of the two bogies at the front and rear ends.When the vehicle is on the transition circular curve,the front and rear bogies have obvious impact at the joint of the transition curve and the circular curve,while the two bogies in the middle are not affected.When the vehicle runs on the S-curve line,the impact of the front and rear bogies on the connection of the straight line and circular curve is significant,and it is significantly greater than the maximum relative angle on the stable circular curve.The vehicle speed has little effect on the relative angle,but the middle vehicle alignment and curve radius have a significant effect.The length of S-curve clip line has a greater effect on the relative angle.With the increase of clip line length,the relative angle first decreases and then tends to be stable,and there is an optimal clip line length.