Rolling contact fatigue of railways wheels: Influence of steel grade and sliding conditions

The aim of this work is to develop a numerical approach which is able to compare the different steel grades influence on rolling contact fatigue of railways wheels according to practical conditions. The main stages are the identification of the material behavior, the determination of the stress-stra...

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Bibliographic Details
Published in:Procedia engineering 2010-04, Vol.2 (1), p.2161-2169
Main Authors: Brunel, J-F., Charkaluk, E., Dufrénoy, P., Demilly, F.
Format: Article
Language:English
Subjects:
Plasticity
Rolling contact fatigue
Shakedown
Steady-state algorithm
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Summary:The aim of this work is to develop a numerical approach which is able to compare the different steel grades influence on rolling contact fatigue of railways wheels according to practical conditions. The main stages are the identification of the material behavior, the determination of the stress-strain fields and the application of a fatigue criterion. Two steels usually used for the manufacturing of wheels have been studied, R9T and 50CrMo4. Their influence has been numerically studied. Results show that the threshold of elastic and plastic shakedown differs depending on the steel grades and consequently the risk of damage can be affected. This methodology allows a classification of the material grades face the risk on rolling contact fatigue.
ISSN:1877-7058
1877-7058
DOI:10.1016/j.proeng.2010.03.232