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RESEARCH PAPERS

The Lubrication of Lightly Loaded Cylinders in Combined Rolling, Sliding, and Normal Motion—Part I: Theory

[+] Author and Article Information
D. Dowson

Department of Mechanical Engineering, Institute of Tribology, The University of Leeds, Leeds, England

P. H. Markho

Department of Mechanical, Marine and Production Engineering, Liverpool Polytechnic, Liverpool, England

D. A. Jones

Institute of Tribology, Department of Mechanical Engineering, The University of Leeds, Leeds, England

J. of Lubrication Tech 98(4), 509-516 (Oct 01, 1976) (8 pages) doi:10.1115/1.3452908 History: Received January 05, 1976; Online October 20, 2010

Abstract

The problem considered in this paper is that of the lubrication of rigid cylindrical solids by an isoviscous lubricant. The steady-state problem has been studied by several authors, but the present analysis explores the effect of non-steady-state conditions arising from combined ‘normal’ and ‘entraining’ motion. It is shown that the major bearing performance characteristics can be accounted for by means of a dimensionless parameter (q) involving the ‘normal’ and ‘entraining’ velocities, the minimum film thickness and the radius of a geometrically equivalent cylinder near a plane. The results are represented graphically and by a set of convenient polynomials in (q). The influence of the cavitation boundary condition is considered and it is shown that sinusoidal ‘normal’ motion superimposed upon ‘entraining’ action can lead to a substantial increase in the nett load carrying capacity.

Copyright © 1976 by ASME
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