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: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2019/1894073 |
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| _version_ | 1832545731814096896 |
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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. |
| format | Article |
| id | doaj-art-a7d0ddb189d04bffb0f609d72146ea2b |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| 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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