RESEARCH PAPERS: Vibration and Sound

Improvements in Lightly Loaded Rotor/Bearing and Rotor/Seal Models

[+] Author and Article Information
A. Muszynska

Bently Rotor Dynamics Research Corporation, Minden, Nevada, 89423

J. Vib., Acoust., Stress, and Reliab 110(2), 129-136 (Apr 01, 1988) (8 pages) doi:10.1115/1.3269489 History: Received August 12, 1987; Online November 23, 2009


A model for lightly loaded steadily rotating shaft/bearing/seal systems is proposed in this paper. The model is based on modal characteristics for the rotor, and rotational characteristics for the fluid dynamic forces generated in bearings and/or seals. The fluid average circumferential velocity ratio as a nonlinear function of shaft eccentricity represents a key factor in the model. The model is extremely useful for rotor stability analysis. The model adequacy was proved for one and two lateral mode models of rotors.

Copyright © 1988 by ASME
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