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RESEARCH PAPERS

Elastohydrodynamic Lubrication of Finite Line Contacts

[+] Author and Article Information
A. Mostofi, R. Gohar

Mechanical Engineering Department, Imperial College, London SW7, England

J. of Lubrication Tech 105(4), 598-604 (Oct 01, 1983) (7 pages) doi:10.1115/1.3254683 History: Received October 15, 1981; Online November 13, 2009

Abstract

In this paper, a numerical solution to the elastohydrodynamic lubrication (EHL) problem is presented for a cylindrical roller with axially profiled ends, rolling over a flat plane. Convergence was obtained for moderate load and material parameters (glass, steel, and a mineral oil). Isobars, contours, and section graphs, show pressure variation and film shape. Predictions of film thickness compare favorably with experiments which use the optical interference method, as well as with other theoretical results for an infinite line contact, or an ellipse having a long slender aspect ratio. The maximum EHL pressure occurs near the start of the profiling and can exceed pressure concentrations there predicted by elastostatic theory.

Copyright © 1983 by ASME
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