Vibration Response Reduction of a Rotor Shaft System Using Viscoelastic Polymeric Supports

[+] Author and Article Information
J. K. Dutt, B. C. Nakra

Mechanical Engineering Department, Indian Institute of Technology, Hauz Khas New Delhi 110 016

J. Vib. Acoust 115(2), 221-223 (Apr 01, 1993) (3 pages) doi:10.1115/1.2930334 History: Received July 01, 1991; Online June 17, 2008


The main objective of the present work is to determine reduction in the unbalance response of a rotor shaft system by using a suitable polymeric or viscoelastic bearing support. For analysis, a simple rotor system has been taken with the rotor placed in the middle of a massless shaft with linear elastic bearings at the ends, having viscoelastic supports. A procedure is given for determining the frequency dependence of viscoelastic support characteristics so that the frequency of excitation never coincides with any of the undamped natural frequencies of the system, thus giving low unbalance response over a wide frequency range and the support material can be chosen accordingly.

Copyright © 1993 by The American Society of Mechanical Engineers
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