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Practical design of a nonlinear tuned vibration absorber
Grappasonni, Chiara; Habib, Giuseppe; Detroux, Thibaut et al.
2014In Proceedings of the ISMA 2014 conference
 

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Keywords :
Nonlinear systems; Vibration absorber; Shape optimisation
Abstract :
[en] The aim of the paper is to develop a new nonlinear tuned vibration absorber (NLTVA) capable of mitigating the vibrations of nonlinear systems which are known to exhibit frequency-energy-dependent oscillations. A nonlinear generalization of Den Hartog’s equal-peak method is proposed to ensure equal peaks in the nonlinear frequency response for a large range of forcing amplitudes. An analytical tuning procedure is developed and provides the load-deflection characteristic of the NLTVA. Based on this prescribed relation, the NLTVA design is performed by two different approaches, namely thanks to (i) analytical formulas of uniform cantilever and doubly-clamped beams and (ii) numerical shape optimization of beams with varying width and thickness. A primary system composed of a cantilever beam with a geometrically nonlinear component at its free end serves to illustrate the proposed methodology.
Disciplines :
Aerospace & aeronautics engineering
Mechanical engineering
Author, co-author :
Grappasonni, Chiara ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Habib, Giuseppe ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Detroux, Thibaut ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Wang, Fengwen;  Technical University of Denmark > Department of Mechanical Engineering
Kerschen, Gaëtan  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Jensen, Jakob Søndergaard;  Technical University of Denmark > Department of Electrical Engineering
Language :
English
Title :
Practical design of a nonlinear tuned vibration absorber
Publication date :
September 2014
Event name :
ISMA 2014
Event date :
September 2014
Audience :
International
Main work title :
Proceedings of the ISMA 2014 conference
Name of the research project :
ERC Starting Grant NoVib 307265; ERC Starting Grant INNODYN
Funders :
UE - Union Européenne [BE]
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since 03 September 2014

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