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RESEARCH PAPERS: Rotor Dynamics Papers

A Numerical Approach to the Stability of Rotor-Bearing Systems

[+] Author and Article Information
K. Athre

Industrial Tribology, Machine Dynamics and Maintenance Engineering Center, Indian Institute of Technology, Delhi, New Delhi-110016, India

J. Kurian

Computer Center, Indian Institute of Technology, Delhi, New Delhi-110016, India

K. N. Gupta, R. D. Garg

Department of Mechanical Engineering, Indian Institute of Technology, Delhi, New Delhi-110016, India

J. Mech. Des 104(2), 356-363 (Apr 01, 1982) (8 pages) doi:10.1115/1.3256351 History: Received June 10, 1981; Online November 17, 2009

Abstract

The stability characteristics of a rotor-bearing system which indicate the threshold of instability are generally obtained by applying the Routh-Hurwitz criterion to the characteristic polynomial. Usually the characteristic polynomial is obtained analytically from the characteristic determinant. In the case of the generalized eigenvalue problems, this is practically impossible. To study the stability characteristics of a floating bush bearing, the characteristic polynomial is constructed from the generalized eigenvalue problem using a recently developed numerical technique. Results obtained through this computer package are compared with those already available in the literature.

Copyright © 1982 by ASME
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