基于SIMPACK的一种山地齿轨车动力学分析

Dynamics Analysis of a Mountain Rack-rail Train based on SIMPACK

建立一种山地齿轨车的车辆动力学模型,计算、对比分析齿轮关键参数和牵引系统驱动方式对车辆动力学性能的影响,以指导齿轨车牵引系统设计。首先基于车辆动力学理论与齿轮齿条传动原理,运用SIMPACK软件建立单节齿轮车的车辆动力学模型,然后计算系统的动力学响应,最后对比分析齿轮参数(齿数、模数、变位系数)和不同驱动方式(黏着/齿轨驱动)对动力学性能的影响。研究表明:轮轨和齿轨双制式牵引方式优于纯齿轨牵引;驱动齿轮选取较小(较大)模数可提高(降低)车轮黏着牵引力,增大(减小)齿轮冲击力;驱动齿轮宜选择较小的变位系数。

A vehicle dynamics model of mountain rack-rail train is established,and the effects of key parameters of gear and driving mode of traction system on vehicle dynamic performance are calculated,compared and analyzed to guide the design of traction system of rack-rail train.Firstly,based on the theory of vehicle dynamics and the principle of gear-rack transmission,the vehicle dynamics model of single train is established by using SIMPACK software,then the dynamics response of the train is calculated,and finally the effects of gear parameters(tooth number,modulus,shift factor)and different driving modes(adhesion/rack-rail drive)on dynamic performance are compared and analyzed.The results show that:dual traction mode is better than the gear rack-rail traction mode;the smaller(larger)modulus of the driving gear can increase(reduce)the wheel adhesion traction force and increase(decrease)the gear impact force;the smaller shift factor should be selected for the driving gear.