Modelling of the plastification near the rough surface of a rail by the wheel–rail contact

Rail surfaces exhibit a certain surface roughness from production to millions of overrollings. This surface roughness cannot be neglected when the mechanisms of sliding–rolling wear are investigated. A two dimensional finite element study is carried out to investigate a small part (micro-region) of...

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Bibliographic Details
Published in:Wear 2002-07, Vol.253 (1), p.241-246
Main Authors: Daves, W, Fischer, F.D
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Friction, wear, lubrication
Fundamental areas of phenomenology (including applications)
Inelasticity (thermoplasticity, viscoplasticity...)
Machine components
Mechanical engineering. Machine design
Numerical study
Physics
Plastic work
Rough surface
Solid mechanics
Structural and continuum mechanics
Viscoelasticity, plasticity, viscoplasticity
Wheel–rail contact
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Summary:Rail surfaces exhibit a certain surface roughness from production to millions of overrollings. This surface roughness cannot be neglected when the mechanisms of sliding–rolling wear are investigated. A two dimensional finite element study is carried out to investigate a small part (micro-region) of a wheel pressed onto a rail. The wheel is assumed to be smooth or is given a certain surface roughness, and the rail is given a measured surface roughness. The wheel is loaded according to the average value of the contact pressure and its time history over the area which is found in a three-dimensional finite element analysis of a wheel–rail contact. The present study will aid understanding the wear mechanisms acting during wheel–rail contact.
ISSN:0043-1648
1873-2577
DOI:10.1016/S0043-1648(02)00107-2