Effect of Damping on the Lateral Critical Speeds of Rotor-Bearing Systems

[+] Author and Article Information
Pranabesh De Choudhury, Stephen J. Zsolcsak

Mechanical Design, Elliott Company, Division of Carrier Corporation, Jeannette, Pa.

Eugene W. Barth

Systems Engineering, Elliott Company, Division of Carrier Corporation, Jeannette, Pa.

J. Eng. Ind 98(2), 505-513 (May 01, 1976) (9 pages) doi:10.1115/1.3438925 History: Received May 23, 1975; Online July 15, 2010


Rigid support lateral critical speeds along with undamped system critical speeds and mode shapes are presented for typical rotor-bearing systems. The steady-state unbalance response analysis presented shows the effect of fluid-film bearing damping on the rotor response. Experimental results show reasonably good correlation with analytical results. The investigation shows that a rational rotor-bearing system design approach can be made for high-speed rotating machinery using the analytical tools.

Copyright © 1976 by ASME
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