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RESEARCH PAPERS

Static Friction Coefficient Model for Metallic Rough Surfaces

[+] Author and Article Information
W. R. Chang, I. Etsion, D. B. Bogy

Department of Mechanical Engineering, University of California, Berkeley, CA 94720

J. Tribol 110(1), 57-63 (Jan 01, 1988) (7 pages) doi:10.1115/1.3261575 History: Received September 01, 1987; Online October 29, 2009

Abstract

The friction force required to shear interface bonds of contacting metallic rough surfaces is calculated, taking into account the prestress condition of contacting asperities. The surfaces are modeled by a collection of spherical asperities with Gaussian height distribution. Previous analyses for adhesion force and contact load of such surfaces are used to obtain the static friction coefficient. It is shown that this coefficient is affected by material properties and surface topography, and that it actually depends on the external loading contrary to the classical law of friction.

Copyright © 1988 by ASME
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