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RESEARCH PAPERS

A Study of the Starting Characteristics of an Unlubricated Journal Bearing

[+] Author and Article Information
D. C. Sun, Jing Xu

Department of Mechanical Engineering, State University of New York at Binghamton, Binghamton, NY 13902-6000

J. Tribol 117(2), 216-223 (Apr 01, 1995) (8 pages) doi:10.1115/1.2831230 History: Received February 24, 1994; Revised May 08, 1994; Online January 24, 2008

Abstract

The complicated motion of the journal in an unlubricated bearing in response to an applied torque is analyzed. The theory identifies the conditions for various distinct modes of motion to occur, including the “dry friction whirl” cited in the literature. The crucial dependence of the motion on the friction coefficient and the normal and tangential restitution coefficients, as revealed by the theory, suggest that perhaps these latter parameters of motion can be determined by measuring the journal’s motion in an unlubricated journal bearing.

Copyright © 1995 by The American Society of Mechanical Engineers
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