Two Temperature Gradients Model for Friction Failure

[+] Author and Article Information
L. Rozeanu, D. Pnueli

Technion—Israel Institute of Technology, Haifa, Israel

J. of Lubrication Tech 100(4), 479-484 (Oct 01, 1978) (6 pages) doi:10.1115/1.3453256 History: Received March 08, 1977; Revised June 20, 1977; Online October 20, 2010


A model of friction interaction between two surfaces is based on considerations of discrete microscopic asperities at the surface. This model establishes the existence of two temperature gradients in the material: a weak one (10 °K/cm) in the bulk, and a very strong one (106 °K/cm) at the surface. A large number of cases of friction failures, which could not be explained by the classical continuum model; are easily interpreted by the two gradient model. It also becomes clear that the continuum model and the two gradient model are opposite extreme cases, with a whole spectrum of intermediate cases between them.

Copyright © 1978 by ASME
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