Reference : Low-order local modelling of structural nonlinearities

	Document type :	Scientific congresses and symposiums : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Aerospace & aeronautics engineering
	To cite this reference:	http://hdl.handle.net/2268/126815

Title :	Low-order local modelling of structural nonlinearities
Language :	English
Author, co-author :	Noël, Jean-Philippe [Université de Liège - ULg > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux >]
	Kerschen, Gaëtan [Université de Liège - ULg > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux >]
Publication date :	Jul-2012
Main document title :	Proceedings of the XVIIIth Symposium on Vibrations, shocks and noise (VCB 2012)
Peer reviewed :	No
On invitation :	No
Audience :	International
Event name :	XVIIIth Symposium on Vibrations, shocks and noise (VCB 2012)
Event date :	du 3 au 5 juillet 2012
Event place (city) :	Paris
Event country :	France
Keywords :	[en] Nonlinear system identification ; Nonlinearity characterisation ; Low-order piecewise polynomials
Abstract :	[en] The present paper addresses the problem of characterising structural nonlinearities in view of system identification. A low-order local modelling strategy is proposed and encapsulated in a recently-introduced frequency-domain nonlinear subspace method for the estimation of model parameters. The complete methodology is first demonstrated using two academic examples, namely a Duffing oscillator and a five-degree-of-freedom system comprising two nonlinearities. The identification of an experimental beam involving nonlinear geometrical behaviour is finally addressed.
Funders :	Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture (Communauté française de Belgique) - FRIA
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/2268/126815

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	Fulltext file(s): File Commentary Version Size Access Open access vcb2012_submission_56.pdf Publisher postprint 275.67 kB View/Open

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