Characterization of Nonlinear Vibrating Systems Using Internal Feedback and Frequency Response Modulation

[+] Author and Article Information
D. E. Adams, R. J. Allemang

Structural Dynamics Research Laboratory (UC-SDRL), University of Cincinnati, PO Box 210072, Cincinnati, OH 45221-0072

J. Vib. Acoust 121(4), 495-500 (Oct 01, 1999) (6 pages) doi:10.1115/1.2894008 History: Received July 01, 1999; Online February 26, 2008


The authors have developed a general frequency response function formulation in a previous article that relates the frequency responses of linear and nonlinear systems. This formulation is based on a spatial perspective of the nonlinearity as an internal feedback force. The present article gives a general interpretation of both the feedback perspective and the previously derived modulation frequency response relationships. A new method of characterizing nonlinear structural dynamic systems that is based on the frequency response relationships is then introduced.

Copyright © 1999 by The American Society of Mechanical Engineers
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