Fractal Acoustic Metamaterials with Subwavelength and Broadband Sound Insulation

We construct new fractal acoustic metamaterials by coiling up space, which can allow subwavelength-scale and broadband sound insulation to be achieved. Using the finite element method and the S-parameter retrieval method, the band structures, the effective parameters, and the transmission losses of...

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Main Authors: Yu Liu, Meng Chen, Wenshuai Xu, Tao Yang, Dongliang Pei, Heng Jiang, Yuren Wang
Format: Article
Language:English
Published: Wiley 2019-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.1155/2019/1894073
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author Yu Liu
Meng Chen
Wenshuai Xu
Tao Yang
Dongliang Pei
Heng Jiang
Yuren Wang
author_facet Yu Liu
Meng Chen
Wenshuai Xu
Tao Yang
Dongliang Pei
Heng Jiang
Yuren Wang
author_sort Yu Liu
collection DOAJ
description We construct new fractal acoustic metamaterials by coiling up space, which can allow subwavelength-scale and broadband sound insulation to be achieved. Using the finite element method and the S-parameter retrieval method, the band structures, the effective parameters, and the transmission losses of these acoustic metamaterials with different fractal orders are researched individually. The results illustrate that it is easy to form low-frequency bandgaps using these materials and thus achieve subwavelength-scale sound control. As the number of fractal orders increase, more bandgaps appear. In particular, in the ΓX direction of the acoustic metamaterial lattice, more of these wide bandgaps appear in different frequency ranges, thus providing broadband sound insulation and showing promise for use in engineering applications.
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institution Kabale University
issn 1070-9622
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language English
publishDate 2019-01-01
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record_format Article
series Shock and Vibration
spelling doaj-art-a7d0ddb189d04bffb0f609d72146ea2b2025-02-03T07:24:52ZengWileyShock and Vibration1070-96221875-92032019-01-01201910.1155/2019/18940731894073Fractal Acoustic Metamaterials with Subwavelength and Broadband Sound InsulationYu Liu0Meng Chen1Wenshuai Xu2Tao Yang3Dongliang Pei4Heng Jiang5Yuren Wang6Key Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaWe construct new fractal acoustic metamaterials by coiling up space, which can allow subwavelength-scale and broadband sound insulation to be achieved. Using the finite element method and the S-parameter retrieval method, the band structures, the effective parameters, and the transmission losses of these acoustic metamaterials with different fractal orders are researched individually. The results illustrate that it is easy to form low-frequency bandgaps using these materials and thus achieve subwavelength-scale sound control. As the number of fractal orders increase, more bandgaps appear. In particular, in the ΓX direction of the acoustic metamaterial lattice, more of these wide bandgaps appear in different frequency ranges, thus providing broadband sound insulation and showing promise for use in engineering applications.http://dx.doi.org/10.1155/2019/1894073
spellingShingle Yu Liu
Meng Chen
Wenshuai Xu
Tao Yang
Dongliang Pei
Heng Jiang
Yuren Wang
Fractal Acoustic Metamaterials with Subwavelength and Broadband Sound Insulation
Shock and Vibration
title Fractal Acoustic Metamaterials with Subwavelength and Broadband Sound Insulation
title_full Fractal Acoustic Metamaterials with Subwavelength and Broadband Sound Insulation
title_fullStr Fractal Acoustic Metamaterials with Subwavelength and Broadband Sound Insulation
title_full_unstemmed Fractal Acoustic Metamaterials with Subwavelength and Broadband Sound Insulation
title_short Fractal Acoustic Metamaterials with Subwavelength and Broadband Sound Insulation
title_sort fractal acoustic metamaterials with subwavelength and broadband sound insulation
url http://dx.doi.org/10.1155/2019/1894073
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