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Experimental study of isolated response curves in a two-degree-of-freedom nonlinear system
Detroux, Thibaut; Noël, Jean-Philippe; Kerschen, Gaëtan et al.
2016In Proceedings of the International Modal Analysis Conference (IMAC) XXXIV
 

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Keywords :
isolated response curve; internal resonance; experimental observation; two-degree-of-freedom system; sinesweep excitation; perturbations
Abstract :
[en] In the present paper, the observation and characterization of isolated response curves (IRCs) are experimentally reported in the case of a nonlinear system consisting of two masses sliding on an horizontal guide. Transverse springs are attached to one mass to provide the nonlinear restoring force, and a harmonic motion of the complete system is imposed by prescribing the displacement of their supports. The existence of an IRC is related to a 3:1 internal resonance between the two modes of the system. The observed IRC is studied in detached and merged conditions using swept-sine excitations and system perturbations.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Detroux, Thibaut ;  Université de Liège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Noël, Jean-Philippe ;  Université de Liège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Kerschen, Gaëtan  ;  Université de Liège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Virgin, Lawrence N.;  Duke University > School of Engineering > Nonlinear Dynamics Group
Language :
English
Title :
Experimental study of isolated response curves in a two-degree-of-freedom nonlinear system
Publication date :
January 2016
Event name :
SEM IMAC XXXIV A Conference and Exposition on Structural Dynamics
Event organizer :
Society for Experimental Mechanics
Event place :
Orlando, Florida, United States
Event date :
25 - 28 January 2016
Audience :
International
Main work title :
Proceedings of the International Modal Analysis Conference (IMAC) XXXIV
European Projects :
FP7 - 307265 - NOVIB - The Nonlinear Tuned Vibration Absorber
Funders :
UE - Union Européenne [BE]
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
CE - Commission Européenne [BE]
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