Multi-criteria evaluation of wheel/rail degradation at railway crossings

Zilong Wei, Alfredo Núñez, Xiubo Liu, Rolf Dollevoet, Zili Li

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
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Abstract

This study evaluates the degradation of wheels and rails at railway crossings. The evaluation method is composed of 1) finite element simulation of dynamic wheel/crossing interaction and 2) multi-criteria analysis of wheel/rail degradation in terms of yield behavior, rolling contact fatigue (RCF) and wear. With the aid of this method, we conducted a case study identifying the proper yield strength of rail steel material for a 54E1-1:9 crossing under a specified traffic condition. The case study indicates that the wear of contact bodies is more sensitive to train speed compared with yield and RCF; the increase of rail yield strength suppresses rail degradation while exacerbating wheel degradation; and rail yield strength in the range of 500–600 MPa is preferred to achieve a good trade-off between the wheel and rail degradations.

Original languageEnglish
Article number106107
Number of pages13
JournalTribology International
Volume144
DOIs
Publication statusPublished - 2020

Keywords

  • Finite element modeling
  • Multi-criteria evaluation
  • Railway crossing
  • Wheel/rail degradation

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