Experimental study of targeted energy transfer from an acoustic system to a nonlinear membrane absorber

Bellet, Romain; Cochelin, Bruno; Herzog, Philippe; Mattei, Pierre‐Olivier

doi:10.1016/j.jsv.2010.01.029

Cited by 114 publications

(168 citation statements)

References 41 publications

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“…Following [2] and [3] and under the same assumptions, a simple model to predict qualitatively the behavior of the vibroacoustic system can be obtained corresponding to the following equations of motion.…”

Section: Associated Modelmentioning

confidence: 99%

“…A series of papers [1,2,3,4] demonstrated that a passive control of sound at low frequencies can be achieved using a vibroacoustic coupling between the acoustic field (the primary system) and a geometrically nonlinear thin baffled structure (the nonlinear absorber). In [1,2], the thin baffled structure consists of a simple thin circular visco-elastic membrane whereas in [3,4] a loudspeaker used as a suspended piston is considered.…”

Section: Introductionmentioning

confidence: 99%

“…In [1,2], the thin baffled structure consists of a simple thin circular visco-elastic membrane whereas in [3,4] a loudspeaker used as a suspended piston is considered. In the four papers, theoretical and experimental results are reported considering transient and periodic external excitation.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, an acoustic medium (as in [1,2,3,4]) is considered as a primary system coupled to a simple thin circular visco-elastic membrane (as in [1,2]). However, two significant differences can be highlighted from these past studies: firstly, the acoustic medium is modeled using two modes and secondly the coupling effect between the primary system and the NES is analyzed under two different harmonic excitations.…”

Section: Introductionmentioning

confidence: 99%

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Responses of a two degree-of-freedom system coupled to a nonlinear damper under multi-forcing frequencies

Bellizzi

Côte

Pachebat

2013

Journal of Sound and Vibration

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In this paper, forced responses are investigated in a two degree-of-freedom linear system with a linear coupling to a Nonlinear Energy Sink (NES) subjected to quasi-periodic excitation. The quasi-periodic regimes associated to quasi-periodic forcing in the regime of 1:1-1:1 are studied analytically using the complexification method combined to the averaging method in terms of multi-time parameter. Local bifurcations of the quasi-periodic regimes are also analyzed using the excitation frequencies as control parameters. The nonlinear differential system is also solved numerically in time domain and the responses are analyzed in view of the analytical results. Stable and unstable quasi-periodic responses are found in good agreement with the analytical study, and strongly modulated responses are noticed. We observe that a single NES can be efficient for the reduction of two resonance peaks even if they are well separated, incommensurable, and excited simultaneously.

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Section: Associated Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Responses of a two degree-of-freedom system coupled to a nonlinear damper under multi-forcing frequencies

Bellizzi

Côte

Pachebat

2013

Journal of Sound and Vibration

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“…Recently the ideas of NES found successful implementations not only in vibration attenuation of the unwanted mechanical vibrations, but also in the acoustics field where the aforementioned methodology is used for a passive sound control in low frequency domain. Cochelin et al [4] and Bellet et al [5] have conducted a comprehensive study on the use of a thin viscoelastic membrane for the design of a NES in acoustics. They experimentally investigate the TET between the membrane and the acoustic medium for both free and forced oscillations.…”

Section: Introductionmentioning

confidence: 99%

Passive control of resonances by nonlinear absorbers

Shao

Cochelin

2012

MATEC Web of Conferences

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Abstract.A new passive technique for reducing vibration and noise using purely nonlinear absorbers is studied. Compared to classical passive systems (Frahm absorbers, Helmholtz resonator), a single nonlinear absorber works in a limited range of forcing but in a wide band of frequency. In this paper, a simple system with two degrees of freedom is used to analyze the beginning of the 'Targeted Energy Transfer" TET phenomenon and to define the desired working zone for Nonlinear Energy Sink (NES). An analytical formula of the level of forcing for the beginning of TET is established by a simplified approach.

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Numerical and experimental study of the performance of a single‐sided vibro‐impact track nonlinear energy sink

Wang

Wierschem

Spencer

et al. 2015

Earthq Engng Struct Dyn

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Summary This paper proposes a single‐sided vibro‐impact track nonlinear energy sink (SSVI track NES) as an effective way to mitigate the effects of impulsive and seismic excitation on building structures. The SSVI track NES is a passive energy dissipation device, which consists of a mass moving along a track, the shape of which provides a nonlinear restoring force to the mass. Previous studies have analyzed the track NES, which considers the track shape to be smooth and symmetric. By introducing a discontinuity into the shape of the track (e.g., through impact), energy in the primary structure can be scattered to higher frequency responses where it can be dissipated at a faster rate. First, the SSVI track NES is analytically investigated and numerically optimized base on a two degree‐of‐freedom primary structure. The results of numerical simulations show that the SSVI track NES can be more efficient than both the track NES and tuned mass damper in reducing the response of the primary structure. Based on the analytical studies, the SSVI track NES is experimentally realized and investigated when subjected to both impulse‐like and seismic excitations, confirming the numerical predictions and validating the analytical model of the device. Finally, the robustness of the SSVI track NES is investigated numerically. The results of this investigation indicate that the SSVI track NES remains effective over a broad range of input excitation energy levels, as well as during significant changes in the stiffness of the primary structure. Copyright © 2015 John Wiley & Sons, Ltd.

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Experimental study of targeted energy transfer from an acoustic system to a nonlinear membrane absorber

Cited by 114 publications

References 41 publications

Responses of a two degree-of-freedom system coupled to a nonlinear damper under multi-forcing frequencies

Responses of a two degree-of-freedom system coupled to a nonlinear damper under multi-forcing frequencies

Passive control of resonances by nonlinear absorbers

Numerical and experimental study of the performance of a single‐sided vibro‐impact track nonlinear energy sink

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