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On wheel–rail contact problem with material properties varying with depth
Author(s) -
Chudzikiewicz Andrzej,
Myśliński Andrzej
Publication year - 2009
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200910329
Subject(s) - quasistatic process , discretization , contact mechanics , coulomb's law , finite element method , layer (electronics) , contact zone , contact area , mechanics , boundary element method , materials science , stress (linguistics) , coulomb friction , coulomb , structural engineering , engineering , mathematical analysis , composite material , mathematics , physics , geology , nonlinear system , geochemistry , quantum mechanics , electron , linguistics , philosophy
Numerous laboratory experiments indicate that the use of a layer or a coating material attached to the conventional steel body reduce the magnitude of contact stress. Therefore in this paper we solve numerically the wheel–rail contact problem with friction and wear assuming the existence of a small elastic layer on the rail surface. Material properties of this layer are changing with its depth. The friction between the bodies is governed by Coulomb law. In contact zone Archard's law of wear is assumed. We take special features of this rolling contact problem and use so‐called quasistatic approach to solve this contact problem. Finite element method is used as a discretization method. The numerical results including the distribution of normal stress along the contact boundary are provided and discussed. (© 2009 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)