Locating Nonlinearity in Mechanical Systems: A Dynamic Network Perspective
Though it is a crucial step for most identification methods in nonlinear structural dynamics, nonlinearity location is a sparsely addressed topic in the literature. In fact, locating nonlinearities in mechanical systems turns out to be a challenging problem when treated nonparametrically, that is, without fitting a model. The present contribution takes a new look at this problem by exploiting some recent developments in the identification of dynamic networks, originating from the systems and control community.
KeywordsNonlinear structural dynamics Nonlinear system identification Nonlinearity location Best linear approximation Dynamic networks
The author J.P. Noël is a Postdoctoral Researcher of the Fonds de la Recherche Scientifique – FNRS which is gratefully acknowledged.
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