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RESEARCH PAPERS

The Role of Compressional Viscoelasticity in the Lubrication of Rolling Contacts

[+] Author and Article Information
G. Harrison, E. G. Trachman

Department of Mechanical Engineering and Astronautical Sciences, Northwestern University, Evanston, Ill.

J. of Lubrication Tech 94(4), 306-312 (Oct 01, 1972) (7 pages) doi:10.1115/1.3451718 History: Received July 02, 1971; Revised March 23, 1972; Online October 18, 2010

Abstract

A simple model for the time-dependent volume response of a liquid to an applied pressure step is used to calculate the variation with rolling speed of the traction coefficient in a rolling contact system. Good agreement with experimental results is obtained at rolling speeds above 50 in/sec. At lower rolling speeds a very rapid change in the effective viscosity of the lubricant is predicted. This behavior, in conjunction with shear rate effects, is shown to lead to large errors when experimental data are extrapolated to zero rolling speed.

Copyright © 1972 by ASME
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