Wear study of short pitch corrugation using an integrated 3D FE train-track interaction model

January 1, 2013 in

Conference Paper


Author
Shaoguang Li

Co-authors
Zili Li, Rolf Dollevoet

Theme(s)


Conference
9th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems
Year: 2012
Location: Chengdu, China

Keywords
3D finite element model, short pitch corrugation, wear

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Abstract

Short pitch corrugation has been a problem for a long time. The mechanism of its initiation and growthis still unclear. Thus a three dimensional finite element train/trackmodel is adopted to study this problem. The wheel-rail contact is treated as being non-Hertzian and non-steady. Wear,treated as being proportional to the frictional work, is calculated and compared to the initial corrugation. The influences of corrugation amplitude, phase difference between vertical contact force and the corrugation are examined. Besides, the effect of traction coefficient on the wear is also investigated. It is found that under different conditions the maximum wear can be anti-phase with the corrugation so that the corrugation can grow steadily. It can also lead or lag behind the corrugation so that the corrugation will evolve forward or backward respectively, or be in-phase with the corrugation when the corrugation willbe leveled out. With this model.