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RESEARCH PAPERS

Amplitude Effects on the Dynamic Performance of Hydrostatic Gas Thrust Bearings

[+] Author and Article Information
A. Kent Stiffler

Department of Mechanical Engineering, Mississippi State University, Mississippi State, Miss. 39762

R. R. Tapia

Atlantic Richfield Company, Dallas, Texas 75221

J. of Lubrication Tech 101(4), 437-443 (Oct 01, 1979) (7 pages) doi:10.1115/1.3453392 History: Received March 23, 1979; Online October 20, 2010

Abstract

A strip gas film bearing with inherently compensated inlets is analyzed to determine the effect of disturbance amplitude on its dynamic performance. The governing Reynolds’ equation is solved using finite-difference techniques. The time dependent load capacity is represented by a Fourier series up to and including the third harmonics. For the range of amplitudes investigated the linear stiffness was independent of the amplitude, and the linear damping was inversely proportional to (1 − ε2 )1.5 where ε is the amplitude relative to the film thickness.

Copyright © 1979 by ASME
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