Stability of Multirecess Hybrid-Operating Oil Journal Bearings

[+] Author and Article Information
Y. S. Chen, H. Y. Wu, P. L. Xie

Department of Mechanical and Electrical Engineering, Beijing Institute of Aeronautics and Astronautics, Beijing, People’s Republic of China

J. Tribol 107(1), 116-121 (Jan 01, 1985) (6 pages) doi:10.1115/1.3260986 History: Received December 01, 1983; Online October 29, 2009


An analysis and a numerical solution using finite difference method to predict the dynamic performance of multirecess hybrid-operating oil journal bearings are presented. The linearized stiffness and damping coefficients of a typical capillary-compensated bearing with four recesses are computed for various design parameters. The corresponding stiffness and the stability threshold of the bearing are then obtained, and the opposite influences of the hydrodynamic action on them are demonstrated. The effect of rotor flexibility on the onset of self-excited whirl is discussed, and a method is given to determine the stability threshold of a rotor-hybrid bearing system.

Copyright © 1985 by ASME
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