Influence of unilateral low adhesion on transient wheel-rail rolling contact and wheel damages

Journal article (2023)

Authors

X. Zhao Southwest Jiaotong University, State Key Laboratory of Traction Power
Shuangchao Huang Southwest Jiaotong University
Shan Yin Southwest Jiaotong University
Jizhong Yang China Railway Eryuan Engineering Group Co.
Z. Yang Railway Engineering - CEG
Gongquan Tao Southwest Jiaotong University
Zefeng Wen Southwest Jiaotong University
Research Group
Railway Engineering (CEG) (TU Delft)
Copyright: © 2023 X. Zhao, Shuangchao Huang, Shan Yin, Jizhong Yang, Z. Yang, Gongquan Tao, Zefeng Wen
DOI
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https://doi.org/10.1016/j.wear.2023.205053
High-speed Wheel-rail rolling contact Vibrations Explicit FE method Irregular wear Low adhesion
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Published Date

2023

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Engineering Structures

Research Group

Railway Engineering

Abstract

A time-domain finite element model is developed to study the transient rolling contact of a driving wheelset over a curved track with Low Adhesion Zones (LAZs) shorter than 1.0 m. LAZs on one rail, i.e., unilateral LAZs occurring more likely, is treated for a speed up to 500 km/h. Structural vibrations of wheelset are analyzed to explain the transient contact forces, creepages and the resulting irregular wear. LAZs on high rails are found more detrimental than those on low rails. The results explain the occurrence of flats and rolling contact fatigue in bad weather, although significant wheel idling is absent.