Steady-State and Dynamic Analyses of Gas-Lubricated Hybrid Journal Bearings

[+] Author and Article Information
W. Shapiro

The Franklin Institute Research Laboratories, Philadelphia, Pa.

J. of Lubrication Tech 91(1), 171-180 (Jan 01, 1969) (10 pages) doi:10.1115/1.3554850 History: Received March 20, 1968; Online August 23, 2011


The inherent limitations of load capacity and stability of hydrodynamic gas-lubricated bearings can be reduced by introducing external pressure and creating a hybrid bearing. Numerical computerized analyses of a hybrid journal bearing are discussed; separate developments are presented for steady-state and dynamic characteristics. The steady-state analysis provides performance over a wide range of operating parameters; the more complicated and lengthy dynamic analysis determines stability of the bearing-rotor system using geometry based upon steady-state results. Simplified flow charts of the computer programs are included. The analyses are applied to the preliminary design of a hybrid journal bearing.

Copyright © 1969 by ASME
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