Theoretical Optimization of Trapped-Bubble-Based Acoustic Metamaterial Performance

Gritsenko, Dmitry; Paoli, Roberto

doi:10.3390/app10165720

Title: Theoretical Optimization of Trapped-Bubble-Based Acoustic Metamaterial Performance

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Abstract

Acoustic metamaterials have proven to be a versatile tool for the precise control and manipulation of sound waves. One of the promising designs of acoustic metamaterials employ the arrays of bubbles and find applications for soundproofing, blast mitigation, and many others. An obvious advantage of bubble-based metamaterials is their ability to be relatively thin while absorbing low-frequency sound waves. The vast majority of theories developed to predict resonant behavior of bubble-based metamaterials capitalize on Minnaert frequency. Here, we propose a novel theoretical approach to characterize bubble-based metamaterials that are based on our previous findings for a single bubble trapped in circular cavity modeled as a thin clamped plate. We obtain analytical expressions for resonant frequencies of bubble metascreens using self-consistent approximation. Two geometry factors, distance between bubble centers and distance between bubble center and interface of acoustic impedance change, are taken into account. We demonstrate the existence of multiple bandgaps and possibility of switching between them via adjustment of geometry parameters and reflector properties.

Authors:

;

Publication Date:: Tue Aug 18 00:00:00 EDT 2020

Sponsoring Org.:: USDOE

OSTI Identifier:: 1647895

Grant/Contract Number:: ANL 4J-303061-0030A

Resource Type:: Published Article

Journal Name:: Applied Sciences

Additional Journal Information:: Journal Name: Applied Sciences Journal Volume: 10 Journal Issue: 16; Journal ID: ISSN 2076-3417

Publisher:: MDPI AG

Country of Publication:: Switzerland

Language:: English

Citation Formats


                    Gritsenko, Dmitry, and Paoli, Roberto. Theoretical Optimization of Trapped-Bubble-Based Acoustic Metamaterial Performance.  Switzerland: N. p., 2020. 
Web.  doi:10.3390/app10165720.

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                    Gritsenko, Dmitry, & Paoli, Roberto. Theoretical Optimization of Trapped-Bubble-Based Acoustic Metamaterial Performance.  Switzerland.  https://doi.org/10.3390/app10165720

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                    Gritsenko, Dmitry, and Paoli, Roberto. Tue .  
"Theoretical Optimization of Trapped-Bubble-Based Acoustic Metamaterial Performance".  Switzerland.  https://doi.org/10.3390/app10165720.

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@article{osti_1647895,

  title        = {Theoretical Optimization of Trapped-Bubble-Based Acoustic Metamaterial Performance},

  author       = {Gritsenko, Dmitry and Paoli, Roberto},

  abstractNote = {Acoustic metamaterials have proven to be a versatile tool for the precise control and manipulation of sound waves. One of the promising designs of acoustic metamaterials employ the arrays of bubbles and find applications for soundproofing, blast mitigation, and many others. An obvious advantage of bubble-based metamaterials is their ability to be relatively thin while absorbing low-frequency sound waves. The vast majority of theories developed to predict resonant behavior of bubble-based metamaterials capitalize on Minnaert frequency. Here, we propose a novel theoretical approach to characterize bubble-based metamaterials that are based on our previous findings for a single bubble trapped in circular cavity modeled as a thin clamped plate. We obtain analytical expressions for resonant frequencies of bubble metascreens using self-consistent approximation. Two geometry factors, distance between bubble centers and distance between bubble center and interface of acoustic impedance change, are taken into account. We demonstrate the existence of multiple bandgaps and possibility of switching between them via adjustment of geometry parameters and reflector properties.},

  doi          = {10.3390/app10165720},

  journal      = {Applied Sciences},

  number       = 16,

  volume       = 10,

  place        = {Switzerland},

  year         = {Tue Aug 18 00:00:00 EDT 2020},

  month        = {Tue Aug 18 00:00:00 EDT 2020}

}

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