Determination of Gas-Bearing Stability by Response to a Step-Jump

[+] Author and Article Information
H. G. Elrod

Franklin Institute Research Laboratories; Columbia University, New York, N. Y.

J. T. McCabe, T. Y. Chu

Franklin Institute Research Laboratories, Philadelphia, Pa.

J. of Lubrication Tech 89(4), 493-498 (Oct 01, 1967) (6 pages) doi:10.1115/1.3617042 History: Received April 13, 1967; Online July 11, 2011


The stability of a gas bearing is treated by a new procedure in which the bearing film is characterised by its responses to step-jump displacements. Duhamel’s theorem is invoked to generalize these step responses in a system of dynamical equations. Stability is determined by calculation of a “growth factor” for each degree of freedom. Results are presented for the infinitely long self-acting sleeve bearing and for a finite length two-bearing system.

Copyright © 1967 by ASME
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