Effects of Skew Unidirectional Striated Roughness on Hydrodynamic Lubrication: Part 2—Moving Roughness

[+] Author and Article Information
K. To̸nder

Division of Machine Design, University of Trondheim, Trondheim, Norway

J. Tribol 109(4), 671-678 (Oct 01, 1987) (8 pages) doi:10.1115/1.3261536 History: Received November 15, 1986; Online October 29, 2009


The author’s work on the lubrication of unidirectional striated roughness at arbitrary angles to the direction of motion has been extended to the case of moving roughness. The previously derived equations are applied to plane inclined pad bearings and solved for various parameter values. The results bring out strong effects that may be useful for bearing design optimisation. As in the case of stationary roughness, the main effect is the generation of a crosswise shear flow component that may improve bearing cooling considerably, or blocked, may generate higher pressures. It is concluded that stationary roughness seems to be preferable to a moving roughness pattern, but that a bearing surface pair having a crossed groove orientation is probably the best.

Copyright © 1987 by ASME
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