The Relation Between the Friction of Lubricated Rough Surfaces and Apparent Normal Pressure

[+] Author and Article Information
P. Lacey, A. A. Torrance, J. A. Fitzpatrick

Department of Mechanical Engineering, Trinity College, Dublin 2, Ireland

J. Tribol 111(2), 260-264 (Apr 01, 1989) (5 pages) doi:10.1115/1.3261902 History: Received April 02, 1988; Online October 29, 2009


Most previous studies of boundary lubrication have ignored the contribution of surface roughness to friction. However, recent work by Moalic et al. (1987) has shown that when asperity contacts can be modelled by a slip line field, there is a precise relation between the friction coefficient and the asperity slope. Here, it is shown that there is also a relation between the friction coefficient and the normal pressure for rough surfaces which can be predicted from a development of the slip line field model.

Copyright © 1989 by ASME
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