Reference : Application of the restoring force surface method to a real-life spacecraft structure

	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/2268/107289

Title :	Application of the restoring force surface method to a real-life spacecraft structure
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 >]
	Newerla, Alfred [European Space Agency (ESTEC) > Structures Section > > > >]
Publication date :	Jan-2012
Main document title :	Proceedings of the International Modal Analysis Conference (IMAC) XXX
Peer reviewed :	No
On invitation :	No
Audience :	International
Event name :	International Modal Analysis Conference (IMAC) XXX
Event date :	du 30 janvier 2012 au 2 février 2012
Event organizer :	Society for Experimental Mechanics (SEM)
Event place (city) :	Jacksonville
Event country :	FL
Keywords :	[en] Nonlinear system identification ; Space structure ; Restoring force surface method
Abstract :	[en] Many nonlinear system identification methods have been introduced in the technical literature during the last thirty years. However, few of these methods were applied to real-life structures. In this context, the objective of the present paper is to demonstrate that the Restoring Force Surface (RFS) method can provide a reliable identification of a nonlinear spacecraft structure. The nonlinear component comprises an inertia wheel mounted on a support, the motion of which is constrained by eight elastomer plots and mechanical stops. Several adaptations to the RFS method are proposed, which include the elimination of kinematic constraints and the regularization of ill-conditioned inverse problems. The proposed methodology is demonstrated using numerical data.
Funders :	Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture (Communauté française de Belgique) - FRIA
Permalink :	http://hdl.handle.net/2268/107289

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	Fulltext file(s): File Commentary Version Size Access Open access RFSSmallSat_IMAC2012_JPNoel.pdf Author preprint 5.44 MB View/Open

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