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RESEARCH PAPERS

Stability Boundary of Non-Linear Orbits Within Clearance Circle of Journal Bearings

[+] Author and Article Information
M. M. Khonsari, Y. J. Chang

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

J. Vib. Acoust 115(3), 303-307 (Jul 01, 1993) (5 pages) doi:10.1115/1.2930349 History: Received November 01, 1991; Revised April 01, 1992; Online June 17, 2008

Abstract

The transient, nonlinear study of journal bearing stability requires tracking the locus of the shaft center as a function of time. It is shown that there exists a boundary within the bearing clearance circle outside of which any initial condition would yield an unstable orbit. This is shown to be the case for operating speeds that are well below the threshold of instability according to the linearized stability analysis.

Copyright © 1993 by The American Society of Mechanical Engineers
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