Reference : Nonlinear Modal Analysis of the SmallSat Spacecraft

	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/2268/116982

Title :	Nonlinear Modal Analysis of the SmallSat Spacecraft
Language :	English
Author, co-author :	Renson, Ludovic [Université de Liège - ULg > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux >]
	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 :	Mar-2012
Main document title :	Proceedings of the European Conference on Spacecraft Structures, Materials & Environmental Testing
On invitation :	No
Audience :	International
City :	Noordwijk
Country :	The Netherlands
Event name :	European Conference on Spacecraft Structures, Materials & Environmental Testing
Event date :	20-23 mars 2012
Event organizer :	European Space Agency
Keywords :	[en] Nonlinear modal analysis ; Nonlinear normal modes ; Modal interaction ; Localization ; Spacecraft
Abstract :	[en] Non-linear elements are present in practically all spacecraft structures. When such non-linear effects are important linear modal analysis can no longer be applied. The development of a non-linear analogue of linear modal analysis is therefore an important endeavor. The objective of this paper is to show that nonlinear normal modes (NNMs) represent a useful and practical tool in this context. A full-scale spacecraft structure is considered and is modeled using the finite element method. Its NNMs are computed using advanced numerical algorithms, and the resulting dynamics is then carefully analyzed. Nonlinear phenomena with no linear counterpart including nonlinear modal interactions are also highlighted.
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/2268/116982

	File(s) associated to this reference
	Fulltext file(s): File Commentary Version Size Access Open access ECSSMET2012_NNM_SmallSat_LRenson.pdf Publisher postprint 2.9 MB View/Open

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