Stability Analysis of an Externally Pressurized Gas-Lubricated Porous Thrust Bearing

[+] Author and Article Information
Dah-Chen Sun

Mechanical Research Department, Research Laboratories, General Motors Corporation, Warren, Mich.

J. of Lubrication Tech 95(4), 457-468 (Oct 01, 1973) (12 pages) doi:10.1115/1.3451857 History: Received April 18, 1973; Online October 18, 2010


A linear stability analysis is carried out for a porous thrust bearing considering only the axially symmetric mode of oscillation. It is found that the stability characteristics of the bearing are determined by three competing mechanisms, namely, the compressibility of the lubricant, the mass of the bearing, and the viscous resistance to the thin film flow. To avoid pneumatic hammer, the bearing should be designed to be light weight and to operate at the smallest possible film thickness and supply pressure.

Copyright © 1973 by ASME
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