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RESEARCH PAPERS

Transient Response of Rotor-Bearing Systems

[+] Author and Article Information
R. G. Kirk

Pratt & Whitney Aircraft, East Hartford, Conn.

E. J. Gunter

Department of Mechanical Engineering, University of Virginia, Charlottesville, Va.

J. Eng. Ind 96(2), 682-690 (May 01, 1974) (9 pages) doi:10.1115/1.3438383 History: Received June 06, 1973; Online July 15, 2010

Abstract

The equations of motion necessary to calculate the transient response of a multimass flexible rotor supported by nonlinear, damped bearings are derived from energy principles. Rotor excitation may be the result of imbalance, internal friction, rotor acceleration, nonlinear forces due to any number of bearing or seal stations, and gyroscopic couples developed from skewed disk effects. The method of solution for transient response simulation is discussed in detail and is based on extensive evaluation of numerical methods available for transient analysis. Examples of the application of transient response for the analysis of rotor bearing systems are presented and compared to actual machine performance. Recommendations for the use and extension of the present system simulation model are discussed.

Copyright © 1974 by ASME
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