Thermomechanical Behavior of Multilayered Media: Theory

[+] Author and Article Information
J. M. Leroy, A. Floquet

Laboratoire de Mécanique des Contacts, C.N.R.S. U.R.A. 856, I.N.S.A. de Lyon, 69621 Villeurbanne Cedex, France

B. Villechaise

Universite de Poitiers, I.U.T. d’Angoulême, 16021 Angoulême Cedex, France

J. Tribol 111(3), 538-544 (Jul 01, 1989) (7 pages) doi:10.1115/1.3261963 History: Received March 10, 1988; Online October 29, 2009


Hard coatings are more and more used to improve the mechanical and tribological behavior of surfaces. Thermomechanical cracking can occur in these coatings when they slide under heavy loads. We present a two-dimensional model of a finite thickness layered medium submitted to a moving heat source. The analytical solution of the temperature and thermoelastic stress fields is obtained using Fourier transforms. The behavior of each layer is described by transfer-matrices and a relation between the displacement- and stress-vectors is given. The originality of the study is the use of a Fast Fourier Transform algorithm. With this method, calculation time is reduced, no singularity problems are met in the inverse transform and each parameter (especially the thickness of the layers) can be studied over a wide range.

Copyright © 1989 by ASME
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