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RESEARCH PAPERS

Large Bearing Numbers and Stationary Reynolds Roughness

[+] Author and Article Information
C. Greengard

IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, NY 10598

J. Tribol 111(1), 136-141 (Jan 01, 1989) (6 pages) doi:10.1115/1.3261863 History: Received April 04, 1988; Online October 29, 2009

Abstract

The nature of Reynolds roughness for wide bearings with large bearing numbers and short wavelength stationary roughness is investigated. It is shown that the White and the To̸nder formulas both apply to the compressible Reynolds equation. However, they apply in different physical regimes—the limiting averaged pressure distribution depends upon the relative sizes of the bearing number and the roughness frequency. Asymptotic expansion methods and numerical calculations are used to find the pressure distributions for different relationships between the bearing number and the roughness frequency.

Copyright © 1989 by ASME
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