Stability of a Rigid Rotor Supported on Flexible Oil Journal Bearings

[+] Author and Article Information
B. C. Majumdar

National Aeronautics and Space Administration, Lewis Research Center, Cleveland, Ohio 44135

D. E. Brewe

U.S. Army Aviation Research and Technology Activity—AVSCOM, Lewis Research Center, Cleveland, Ohio 44135

M. M. Khonsari

Ohio State University, Columbus, Ohio 43210

J. Tribol 110(1), 181-187 (Jan 01, 1988) (7 pages) doi:10.1115/1.3261562 History: Received February 25, 1987; Online October 29, 2009


This investigation deals with the stability characteristics of oil journal bearings, including the effect of elastic distortions in the bearing liner. Graphical results are presented for (1) steady-state load, (2) stiffness and damping coefficients, and (3) the stability. These results are given for various slenderness ratios, eccentricity ratios, and elasticity parameters. The lubricant is first assumed to be isoviscous. The analysis is then extended to the case of a pressure-dependent viscosity. It has been found that stability decreases with increase of the elasticity parameter of the bearing liner for heavily loaded bearings.

Copyright © 1988 by ASME
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