3D transient elasto-plastic finite element analysis of a flatted railway wheel in rolling contact

Hossein Alizadeh Otorabad, Parisa Hosseini Tehrani, Davood Younesian

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Abstract

A precise study of stress state is crucial for an accurate evaluation of railway wheel defects. Wheel flats cause severe impact loads, which aggravate wheel failure. This paper describes 3D transient elasto-plastic finite element analyses of undamaged and flatted railway wheels using Chaboche’s plasticity model as material model. The effect of the impact load is considered on contact region parameters that influence the stress. The results show that in a flatted wheel, the maximum contact force might not lead to a maximum von-Mises stress. It occurs in all cases considered, in a cross-section just above the leading edge of the wheel flat.

Original languageEnglish
Pages (from-to)751-766
JournalMechanics Based Design of Structures and Machines
Volume46
Issue number6
DOIs
Publication statusPublished - 2018

Keywords

  • Impact force
  • railway
  • stress
  • transient FEM
  • wheel flat

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