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RESEARCH PAPERS

First Effects of Stokes Roughness on Hydrodynamic Lubrication

[+] Author and Article Information
Dah-chen Sun

Engineering Mechanics Department, General Motors Research Laboratories, General Motors Technical Center, Warren, Mich.

Kuo-Kuang Chen

Mathematics Department, General Motors Research Laboratories, General Motors Technical Center, Warren, Mich.

J. of Lubrication Tech 99(1), 2-9 (Jan 01, 1977) (8 pages) doi:10.1115/1.3452975 History: Received December 08, 1975; Revised March 25, 1976; Online October 20, 2010

Abstract

Considering the actual roughness dimensions as well as the typical dimensions of a hydrodynamically lubricating film, the Stokes equations are used to analyze the roughness effects. The surface profile is modeled by an ergodic, stationary random process. It is revealed that the roughness effects can be determined by three parameters; viz., the rms roughness, the correlation length, and the correlation wavelength. The present results are significantly different from those in the literature, where the Reynolds equation is used for analysis.

Copyright © 1977 by ASME
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