Article (Scientific journals)
Tailoring the resonances of nonlinear mechanical systems
Detroux, Thibaut; Noël, J.-P.; Kerschen, Gaëtan
2021In Nonlinear Dynamics, 103 (4), p. 3611 - 3624
Peer reviewed
 

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Keywords :
Modal design; Nonlinear normal mode; Nonlinear resonance; Nonlinearity synthesis; Restoring force; Dynamics; Amplitude dependence; Isochronicity; Mathematical forms; Modal interactions; Motion amplitudes; Nonlinear mechanical systems; Restoring forces; Vibration modes; Mechanical engineering
Abstract :
[en] The objective of this paper is the realization of a desired frequency–amplitude dependence of a specific vibration mode of a nonlinear system. To this end, we introduce an additional nonlinearity with an a priori arbitrary mathematical form in the considered system and synthesize its restoring force through optimization. To greatly facilitate the optimization process, the restoring force is optimized piece by piece from low to large motion amplitudes. The suppression of a modal interaction and the enforcement of isochronicity are considered to demonstrate the proposed procedure. © 2020, Springer Nature B.V.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Detroux, Thibaut ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique
Noël, J.-P.;  Control Systems Technology Group, Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, Netherlands
Kerschen, Gaëtan  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Language :
English
Title :
Tailoring the resonances of nonlinear mechanical systems
Publication date :
2021
Journal title :
Nonlinear Dynamics
ISSN :
0924-090X
eISSN :
1573-269X
Publisher :
Springer Science and Business Media B.V.
Volume :
103
Issue :
4
Pages :
3611 - 3624
Peer reviewed :
Peer reviewed
Funding text :
The author T. Detroux is a Postdoctoral Researcher of the Fonds de la Recherche Scientifique - FNRS which is gratefully acknowledged. The authors J. P. Noël and G. Kerschen would like to acknowledge the financial support of the SPW (WALInnov grant).
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