The numeral procedure (PPSM, pass-by-pass stationary method) presented in this paper is exact within the finite element approximation. It permits the investigation of a very large class of problems involved in the rail/wheel contact: stabilized state, ratchetting rate, temperature rise. By coupling this method with appropriate fatigue criteria, a good tool for the prediction of (high cycle or low cycle) fatigue crack appearance can be obtained. In this paper an illustration only for high cycle fatigue has been done. Nevertheless, three-dimensional and dynamic structural effects, real contact characteristics and more sophisticated processes, such as the experimentally observed metallurgical transformation, must be taken into account to achieve a realistic model for the prediction of fatigue failure.
Elastoplastic analysis of repeated moving contact. Application to railways damage phenomena
Elastoplastische Untersuchung des sich wiederholenden Rollkontakts. Anwendung zur Schadensuntersuchung an Eisenbahnschienen
1996
5 Seiten, 6 Bilder, 16 Quellen
Article (Journal)
English
Rolling contact in railways: Modelling, simulation and damage prediction
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