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RESEARCH PAPERS: Vibration and Sound

A Nonlinear Oscillator Lanchester Damper

[+] Author and Article Information
K. R. Asfar, A. H. Nayfeh

Department of Engineering Science and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061

K. A. Barrash

Yarmouk University, Irbid, Jordan

J. Vib., Acoust., Stress, and Reliab 109(4), 343-347 (Oct 01, 1987) (5 pages) doi:10.1115/1.3269451 History: Received April 01, 1987; Online November 23, 2009

Abstract

The method of multiple scales is used to investigate the effect of a nonlinear spring in the main system on the performance of Lanchester-type absorbers. A second-order uniform expansion is obtained for the response of the system to a harmonic excitation. Numerical results for steady-state solutions illustrating the influence of the nonlinearity and damping factors on the response are presented. A softening-type effective nonlinearity dominates the system and considerably improves its damping.

Copyright © 1987 by ASME
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