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

NI Pingtao  WANG Kaiwen  CHEN Jian

(State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031)

Abstract: 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.

Key words: Coupled wheelset  Magneto-rheological fluid (MRF)  Yield stress  Highspeed curving passing

CLC No: TU270.1

教育部博士点基金资助项目(20030613004). Received 20061108, received in revised form 20070623