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中南大学学报(英文版)

Journal of Central South University

Vol. 28    No. 6    June 2021

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Wheel wear comparison between motor car and trailer of intercity train
KOU Jie(寇杰)1, ZHANG Ji-min(张济民)1, ZHOU He-chao(周和超)1, WANG Cheng-ping(王承萍)1, SUN Li-xia(孙丽霞)2

1. Institute of Rail Transit, Tongji University, Shanghai 201804, China;
2. Railway Science Technology Research and Development Center, China Academy of
Railway Science Cooperation Limited, Beijing 100081, China

Abstract:To analyze wheel wear discrepancy between motor car and trailer of an intercity train, a novel wheel wear rates calculation model was proposed, which was composed of the intercity train dynamics model, wheel-rail three-dimensional rolling contact FEM model and the wear model. The simulated results were contrasted with measured results in field test. The simulated results showed the motor car wheels had larger rotation rate and longitudinal creepage than the trailer wheels. Meanwhile, the motor car wheels encountered larger vertical forces and longitudinal forces from bogie because of the heavier car body and the impact of traction torque. The traction torque acting on motor car wheel could increase the slip rates in the rear part of wheel contact patch and weaken the spinning phenomenon of relative slip. Larger contact pressure and slip rates caused the higher wear rates of motor car wheel than those of trailer wheel. The overall trends of wheel wear depth in simulated and tested results were similar. And they both showed the motor car wheel encountered the more serious wear than the trailer wheel. These models can be used to study the effect of the traction characteristics curves on the wear of wheel.

 

Key words: wheel wear; intercity train; motor car and trailer; finite element method (FEM); field test

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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