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RESEARCH PAPERS

Response Spectra for Nonlinear Oscillators

[+] Author and Article Information
J. E. Manning

Cambridge Collaborative, Inc., Cambridge, Mass.

J. Eng. Ind 97(4), 1223-1226 (Nov 01, 1975) (4 pages) doi:10.1115/1.3438732 History: Received May 23, 1975; Online July 15, 2010

Abstract

Methods are presented for calculating the response spectrum of a nonlinear oscillator with broadband random excitation. A perturbation approach is used for oscillators with slightly nonlinear spring elements to show that the effect of the nonlinearity is a slight shift in the spectrum peak. A new heuristic approach is used for oscillators with large nonlinearities and small damping to show that in addition to a shift in the peak an increase in spectral bandwidth also occurs. The Duffing oscillator is studied as a specific example.

Copyright © 1975 by ASME
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