Transient Response of a Rotor in Damped Bearings

[+] Author and Article Information
W. D. Pilkey

University of Virginia, Charlottesville, Va.

J. S. Strenkowski

Applied Solid Mechanics Section, Battelle Memorial Institute, Columbus, Ohio

P. Y. Chang

Hydronautics, Inc., Laurel, Md.

J. Mech. Des 100(2), 257-265 (Apr 01, 1978) (9 pages) doi:10.1115/1.3453909 History: Received June 01, 1977; Online October 21, 2010


In this paper, the transient response of a rotor subjected to a general forcing function is presented. The rotor model permits any number of in-span bearings, which include stiffness, damping, and mass properties. The excitation forces may include distributed loadings along the rotor as well as transient bearing base motion. The response is found by use of a modal analysis that incorporates the damped mode shapes. An illustrative example is presented of a rotor subjected to an initial displacement and a saw-tooth bearing base displacement.

Copyright © 1978 by ASME
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