磁流变耦合轮对车辆高速曲线通过性能研究和探讨  

RESEARCH AND DISCUSSION ON HIGH-SPEED CURVE PASSING PERFORMANCES OF VEHICLE WITH MAGNETO-RHEOLOGICAL FLUID COUPLED WHEELSETS

作　　者：倪平涛[1] 王开文[1] 陈健[1] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,成都610031

出　　处：《机械工程学报》2007年第11期173-176,共4页Journal of Mechanical Engineering

基　　金：教育部博士点基金(20030613004)。

摘　　要：为使磁流变耦合轮对车辆向高速铁路的工程化有较大的进展,建立31自由度的车辆系统数学模型。仿真计算表明:磁流变屈服应力小于某一值和曲线半径小于一定值时,对轮对的横移、摇头、轮轨横向力和车体横向加速度造成的波动较大,有的可能会出现两点接触;屈服应力在随后的一定范围内,车辆在不同半径曲线上的以上性能参数变化平缓且较小;继续增大屈服应力,以上性能参数则增加。因此,当磁流变的屈服应力在一定范围内变化时,磁流变耦合轮对车辆才具有较好的高速曲线通过性能。In order to make a good progress to engineering of high-speed railway in vehicle with magneto-rheological fluid （MRF） coupled wheelsets, mathematical model of vehicle system with 31 DOF is established. Simulation shows that the displacement, yaw of wheelsets, wheel/rail lateral force and the lateral acceleration of carbody change greatly when MRF yield stress is less than a certain value and curve radius is less than a certain value, two-point may come into being. The former performance is smaller and vary slowly in the subsequent scope of MRF yield stress. If yield stress is increased, the former performance becomes bigger. Therefore, vehicle with MRF coupled wheelsets possesses better highspeed curve passing dynamic performances when yield stress is in the certain scope.

关 键 词：耦合轮对 磁流变 屈服应力 高速曲线通过 

分 类 号：U270.1[机械工程—车辆工程]