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RESEARCH PAPERS

On Mixed Squeeze Films of Infinite Width Plates

[+] Author and Article Information
Wu Chengwei

Research Institute of Engineering Mechanics, Dalian University of Technology, Dalian 116023, China

J. Tribol 113(2), 378-383 (Apr 01, 1991) (6 pages) doi:10.1115/1.2920632 History: Received January 19, 1990; Revised May 28, 1990; Online June 05, 2008

Abstract

A mixed squeeze film model between two rough squeezing plates is established in the present paper. The squeeze behavior in the presence of full and partial fluid film between two rough surfaces is analyzed by using Patir and Cheng’s average flow model and Greenwood and Tripp’s roughness contact model. For one-dimensional squeeze films, transverse and isotropic surface roughness (γ ≤ 1) leads to an increasing squeeze film damping coefficient and a longer sinkage time in comparison with smooth surfaces. But, longitudinal roughness (γ > 1) leads to a decreasing squeeze film damping coefficient and a shorter sinkage time. When the roughness orientation parameter γ is kept constant, increasing roughness amplitude causes an early roughness contact and an increasing contact rigidity.

Copyright © 1991 by The American Society of Mechanical Engineers
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