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Effects of sliding on rolling contact fatigue of railway wheels

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2013
auteur(s) Langueh Amavi Mawule Guissou; Brunel Jean-François; Charkaluk Eric; Dufrenoy Philippe; Tritsch Jean-Bernard; Demilly François
journal (abréviation) Fatigue & Fracture of Engineering Materials & Structures (Fatig Fract Eng Mater Struct)
volume (numéro) 36 (6)
pages 515 – 525
résumé This paper proposes a numerical approach based on a steady-state algorithm to predict the rolling contact fatigue crack initiation in railway wheels in practical conditions. This work suggests taking into account the cyclic hardening of the wheel's material and one of its originality is to conduct a complete numerical approach whatever the loading level. The main stages are the characterization and modelling of the material behaviour, the determination of the stress–strain fields using a numerical steady-state method and the application of a high cycle fatigue criterion. Computations were made with the Abaqus FE commercial software. Three cases are studied: rolling with or without sliding and skating. The numerical results give several types of mechanical responses: elastic or plastic shakedown. Otherwise, the results show that the location where the shear stress is maximal is not the same as where the risk of crack is the highest.
mots clés hardening;rolling contact fatigue;shakedown;steady-state algorithm
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