Identification of nonlinear phenomena in a stochastically excited beam system with impact

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Abstract

The response of strongly nonlinear dynamic systems to stochastic excitation exhibits many interesting characteristics. In this paper, an impacting beam system under broad and small banded, Gaussian noise excitation is investigated numerically as well as experimentally. The emphasis lies on frequency domain characteristics. Phenomena like multiple resonance frequencies and stochastic equivalents of harmonic and subharmonic solutions are found. A better understanding of such stochastic response characteristics is obtained by a comparison with nonlinear periodic response features. It is shown that these stochastic response phenomena can provide valuable information on periodic response characteristics of the system.
Original languageEnglish
Title of host publicationProc. 1998 Int. Conf. on Noise anProceedings of ISMA 23, 1998 international conference on noise and vibration engineering : September 16-18, Leuven.d Vibration Engineering (ISMA 23)
EditorsP. Sas
Place of PublicationLeuven, Belgium
Pages321-328
Publication statusPublished - 1998

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