A Study of Elastohydrodynamic Lubrication of Rough Surfaces

[+] Author and Article Information
L. Chang

School of Engineering and Science, The Hartford Graduate Center, Hartford, CT 06120

M. N. Webster

Central Research Laboratory, Mobil Research and Development Corporation, Princeton, NJ 08540

J. Tribol 113(1), 110-115 (Jan 01, 1991) (6 pages) doi:10.1115/1.2920574 History: Received February 26, 1990; Revised June 07, 1990; Online June 05, 2008


This paper reports some results of rough-surface, elastohydrodynamically lubricated (EHD) contacts obtained using a previously developed transient EHD model. The surface roughness is modeled with sinusoidal functions of small wavelength compared to the contact zone. Results are presented showing how the operating conditions affect the film thickness, micro-deformation of the roughness, and the pressure perturbations due to motion and interaction of roughness within the contact. This preliminary work suggests that the entraining velocity and the slide-to-roll ratio are the most sensitive parameters influencing the lubrication process of rough-surface EHD contacts.

Copyright © 1991 by The American Society of Mechanical Engineers
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