Targeted energy transfer from a resonant room to a hybrid electro-acoustic nonlinear membrane absorber: Numerical and experimental study

Bryk, Pierre-Yvon; Côte, Renaud; Bellizzi, Sergio

doi:10.1016/j.jsv.2019.114868

Cited by 12 publications

(8 citation statements)

References 25 publications

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“…Slow invariant manifold-the TET zone. 28 Discussion: Applying the NES to suppress low-frequency noise inside three-dimensional cavities (vehicle interior cabin, etc.) and to harvest energy…”

Section: Noise Suppressionmentioning

confidence: 99%

“…When the device was placed in the concrete room, the sound measured in the first-order mode of the room was about 43 Hz and the pressure level was reduced by 8 dB. 28 Discussion: Applying the NES to suppress low-frequency noise inside three-dimensional cavities (vehicle interior cabin, etc.) and to harvest energy…”

Section: Noise Suppressionmentioning

confidence: 99%

“…At the same time, the air damping also had a great influence on the vibration suppression effect of the NES. In the study of Bryk et al, 28 a method of calculating air quality factor was proposed. It was found that the air column had a great influence on whether the NES could achieve the TET.…”

Section: Mass Stiffness and Damping Of The Nesmentioning

confidence: 99%

“…The analysis of the NES mainly included the nonlinear modal and resonance capture phenomena of the system, [21][22][23][24] effects of different degree-of freedoms (DOF) of the system, the mass, stiffness, and damping of the NES and connection types, 11,25,26 amplitude of excitation force on response type, and TET transmission efficiency. 27,28 And the TET technology had a significant effect on the energy control of the vibration and noise in broadband low frequency. Compared with traditional noise reduction methods that add damping and sound absorption materials, the NES has a simple and lightweight structure.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Nonlinear energy sink applied for low-frequency noise control inside acoustic cavities: A review

Shao

Yang

Wang

et al. 2020

Journal of Low Frequency Noise, Vibration and Active Control

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In recent years, the research of nonlinear energy sink on low-frequency noise control has become a hotspot. By adding a nonlinear energy sink into one primary system, it is possible to obtain the significant target energy transfer characteristics. The target energy transfer can be defined for which the vibration energy of the primary structure is irreversibly transferred to the nonlinear energy sink, quickly concentrated in the nonlinear energy sink and dissipated by the nonlinear energy sink damping. This method has significant advantages to control the broadband low-frequency noise inside the transportations (such as cars, trains, airplanes, etc.). Compared with traditional noise reduction methods such as adding the damping and acoustical materials, the nonlinear energy sink has a simple and lightweight structure. The paper reviews the nonlinear characteristics of the nonlinear energy sink, the main theoretical research methods and the applications of vibration and noise control, and discusses the application of the nonlinear energy sink for the control of low-frequency noise inside the three-dimensional acoustic cavities, which provides the reference and guidance for the low-frequency noise control inside the acoustic cavities of the mean of transportation.

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Section: Noise Suppressionmentioning

confidence: 99%

Section: Noise Suppressionmentioning

confidence: 99%

Section: Mass Stiffness and Damping Of The Nesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nonlinear energy sink applied for low-frequency noise control inside acoustic cavities: A review

Shao

Yang

Wang

et al. 2020

Journal of Low Frequency Noise, Vibration and Active Control

View full text Add to dashboard Cite

show abstract

“…They found that electromagnets could be used for manipulating the dynamics of a nonlinear absorbing membrane and could be incorporated into an active optimization strategy. Bryk et al [18] presented an evidence of TET in a concrete building to reduce low frequency noise with a hybrid electro-acoustic NES (EA-NES) and measured up to 8 dB of attenuation around 43 Hz.…”

Section: Introductionmentioning

confidence: 99%

Influence of the pre-stress of the nonlinear membrane absorber for targeted energy transfer applied to 3D acoustic cavity

Shao

Zeng

Wang

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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The targeted energy transfer (TET) technique could be applied to reduce the low frequency noise by a nonlinear membrane absorber as nonlinear energy sink (NES) inside a tube or an acoustic cavity. The pre-stress of the nonlinear membrane can affect the desired working zone for the TET and also the suppressed amplitude of noise. In order to design the nonlinear membrane according to a given acoustic medium, the influence of the pre-stress of the nonlinear membrane is quantitatively studied in this paper. The analytical formulae over the pre-stress of the membrane are established based on a general model of the system with an acoustic mode of 3D acoustic cavity and one membrane. Meanwhile, the suppressed frequency bandwidth of noise is investigated under different pre-stress levels of the membrane by using harmonic balance method and numerical method. For convenient applications, the radial deformation analysis and the modal analysis of the membrane with the prestress are finally performed by finite element method (FEM) to obtain the relationship between the radial displacement and the first mode. It can be helpful to guide design of the pre-stress of the membrane NES according to the desired working zone for the practice engineering application in acoustic field.

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Realization of nonreciprocal acoustic energy transfer using an asymmetric strong nonlinear vibroacoustic system

Jin,

Huang,

Xiao

2024

Int Journal of Mech Sys Dyn

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In this paper, an asymmetric vibroacoustic system that can passively realize nonreciprocal transmission of acoustic energy is reported. This experimental system consists of a waveguide, a strongly nonlinear membrane, and three acoustic cavities with different sizes. The theoretical modeling of the system is verified by experiments, and parametric analysis is also carried out. These intensive studies reveal the nonreciprocal transmission of acoustic energy in this prototype system. Under forward excitation, internal resonance between the two nonlinear normal modes of the vibroacoustic system occurs, and acoustic energy is irreversibly transferred from the waveguide to the nonlinear membrane. However, under backward excitation, there is no internal resonance in the system. Energy spectra and wavelet analysis are used to highlight the mechanism of nonreciprocal transfer of acoustic energy. Consequently, nearly unidirectional (preferential) transmission of acoustic energy transfer is shown by this system. The nonreciprocal acoustic energy transfer method illustrated in this paper provides a new way to design the odd acoustic element.

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Targeted energy transfer from a resonant room to a hybrid electro-acoustic nonlinear membrane absorber: Numerical and experimental study

Abstract: We present the first real size evidence of targeted energy transfer in a concrete building, with an efficient action on low frequency noise reduction. It is achieved by the means of a hybrid Electro-Acoustic Nonlinear Energy Sink

Cited by 12 publications

References 25 publications

Nonlinear energy sink applied for low-frequency noise control inside acoustic cavities: A review

Nonlinear energy sink applied for low-frequency noise control inside acoustic cavities: A review

Influence of the pre-stress of the nonlinear membrane absorber for targeted energy transfer applied to 3D acoustic cavity

Realization of nonreciprocal acoustic energy transfer using an asymmetric strong nonlinear vibroacoustic system

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