Analysis of rolling contact fatigue damage initiation at the wheel-rail interface

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Rolling contact fatigue (RCF) results in damages on the railhead surface and wheel tread. The current paper presents the analysis of RCF damage initiation and stress distribution at the wheelrail interface at different directions. A three-dimensional elastic frictional finite element model of the wheel-rail interaction is used to investigate the effect of the applied contact loading force at the straight, transition, and curved areas of the wheel tread and railhead surface. The interaction between the left and right wheels is considered. The interface exhibits small damage problems that are solved via the finite element method (FEM) software code ANSYS 11. The half-space assumption of the Hertz method is avoided by FEM. The real geometry and the boundary condition of the wheel-rail interface are accurately shown by the proposed simulation. The numerical results indicate the fatigue life and equivalent stress at the straight, transition, and curved areas of the rail track. Significant effect damages from the contact force on the wheel tread and the curve radius of rail track are observed at the interface.

Original languageEnglish
Pages (from-to)937-945
Number of pages9
JournalAustralian Journal of Basic and Applied Sciences
Volume5
Issue number12
Publication statusPublished - Dec 2011

Fingerprint

Fatigue damage
Rails
Wheels
Railroad tracks
Fatigue of materials
Finite element method
Stress concentration
Boundary conditions
Geometry

Keywords

  • Curved track
  • Fatigue life
  • Finite element method
  • Wheel-rail

ASJC Scopus subject areas

  • General

Cite this

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title = "Analysis of rolling contact fatigue damage initiation at the wheel-rail interface",
abstract = "Rolling contact fatigue (RCF) results in damages on the railhead surface and wheel tread. The current paper presents the analysis of RCF damage initiation and stress distribution at the wheelrail interface at different directions. A three-dimensional elastic frictional finite element model of the wheel-rail interaction is used to investigate the effect of the applied contact loading force at the straight, transition, and curved areas of the wheel tread and railhead surface. The interaction between the left and right wheels is considered. The interface exhibits small damage problems that are solved via the finite element method (FEM) software code ANSYS 11. The half-space assumption of the Hertz method is avoided by FEM. The real geometry and the boundary condition of the wheel-rail interface are accurately shown by the proposed simulation. The numerical results indicate the fatigue life and equivalent stress at the straight, transition, and curved areas of the rail track. Significant effect damages from the contact force on the wheel tread and the curve radius of rail track are observed at the interface.",
keywords = "Curved track, Fatigue life, Finite element method, Wheel-rail",
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N2 - Rolling contact fatigue (RCF) results in damages on the railhead surface and wheel tread. The current paper presents the analysis of RCF damage initiation and stress distribution at the wheelrail interface at different directions. A three-dimensional elastic frictional finite element model of the wheel-rail interaction is used to investigate the effect of the applied contact loading force at the straight, transition, and curved areas of the wheel tread and railhead surface. The interaction between the left and right wheels is considered. The interface exhibits small damage problems that are solved via the finite element method (FEM) software code ANSYS 11. The half-space assumption of the Hertz method is avoided by FEM. The real geometry and the boundary condition of the wheel-rail interface are accurately shown by the proposed simulation. The numerical results indicate the fatigue life and equivalent stress at the straight, transition, and curved areas of the rail track. Significant effect damages from the contact force on the wheel tread and the curve radius of rail track are observed at the interface.

AB - Rolling contact fatigue (RCF) results in damages on the railhead surface and wheel tread. The current paper presents the analysis of RCF damage initiation and stress distribution at the wheelrail interface at different directions. A three-dimensional elastic frictional finite element model of the wheel-rail interaction is used to investigate the effect of the applied contact loading force at the straight, transition, and curved areas of the wheel tread and railhead surface. The interaction between the left and right wheels is considered. The interface exhibits small damage problems that are solved via the finite element method (FEM) software code ANSYS 11. The half-space assumption of the Hertz method is avoided by FEM. The real geometry and the boundary condition of the wheel-rail interface are accurately shown by the proposed simulation. The numerical results indicate the fatigue life and equivalent stress at the straight, transition, and curved areas of the rail track. Significant effect damages from the contact force on the wheel tread and the curve radius of rail track are observed at the interface.

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