A Finite Element Approach to Pad Flexibility Effects in Tilt Pad Journal Bearings: Part II—Assembled Bearing and System Analysis

[+] Author and Article Information
L. L. Earles, A. B. Palazzolo

Texas A&M University, Department of Mechanical Engineering, College Station, TX 77843

R. W. Armentrout

CentriMarc Division of Imo Industries Inc., Friendswood, TX 77546

J. Tribol 112(2), 178-182 (Apr 01, 1990) (5 pages) doi:10.1115/1.2920239 History: Received March 28, 1989; Online June 05, 2008


Pad flexibility effects are studied in an actual bearing. This flexibility is shown to decrease the predicted instability onset speed of the rotor bearing system. The use of complex eigenvalue dependent bearing coefficients as compared with using synchronously reduced coefficients is seen to produce a more significant decrease in the instability onset speed. Further reductions in the instability onset speed are obtained by including pivot stiffness in the complex eigenvalue dependent bearing coefficients.

Copyright © 1990 by The American Society of Mechanical Engineers
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