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RESEARCH PAPERS

Performance Analysis of Grease-Lubricated Journal Bearings Including Thermal Effects

[+] Author and Article Information
J. Y. Jang

Department of Mechanical Engineering, University of Pittsburgh, Pittsburgh, PA 15261

M. M. Khonsari

Department of Mechanical Engineering, Southern Illinois University at Carbondale, Carbondale, IL 62901-6603

J. Tribol 119(4), 859-868 (Oct 01, 1997) (10 pages) doi:10.1115/1.2833897 History: Received April 05, 1996; Revised September 26, 1996; Online January 24, 2008

Abstract

A detailed analysis of the flow characteristics and lubrication effectiveness of grease in journal bearings is presented. Based on the ideal Bingham plastic model, the appropriate governing equations are developed which effectively handle the formation of a floating core as well as a core which may attach itself to either the shaft or the stationary bushing. The formulation and numerical solutions presented pertain to three-dimensional flows in finite journal bearings. Moreover, an extensive amount of computational results are presented, which take thermal effects into account according to the thermohydrodynamic theory.

Copyright © 1997 by The American Society of Mechanical Engineers
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