Analyses of the Role of Surface Roughness on Contact Stresses Between Elastic Cylinders With and Without Soft Surface Coating

[+] Author and Article Information
T. Merriman, J. Kannel

Battelle Columbus Division, Columbus, Ohio 43201

J. Tribol 111(1), 87-94 (Jan 01, 1989) (8 pages) doi:10.1115/1.3261883 History: Received March 05, 1988; Online October 29, 2009


The paper presents a theory for contact stresses between a smooth and rough elastic cylinder. Three types of primary surface textures are considered: a peaked surface texture, a normal surface texture, and a grooved surface texture. The predicted contact stresses between a smooth and a rough surface are considerably higher than would be predicted by Hertz theory for smooth contact. In addition, when the rough surface has high peak asperities the contact stresses are higher than when the rough surface is grooved even though the average roughness is the same. A soft layer on the smooth surface can reduce the magnitude of the peak stresses.

Copyright © 1989 by ASME
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