A Honeycomb Based Graded Metamaterial Muffler with Broadband Sound Attenuation and Load Bearing Performances
A challenge for developing acoustic metamaterials (AMMs) is considering the application of broadband muffling and load bearing capacity simultaneously. In this paper, a honeycomb based graded AMM muffler is proposed, which can widen the attenuation band and improve the structural stiffness without a...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Institute of Fundamental Technological Research
2022-06-01
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| Series: | Archives of Acoustics |
| Subjects: | |
| Online Access: | https://journals.pan.pl/Content/123490/PDF/aoa.2022.141651.pdf |
| _version_ | 1797869268416593920 |
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| author | Gen Li Yan Chen Huan He |
| author_facet | Gen Li Yan Chen Huan He |
| author_sort | Gen Li |
| collection | DOAJ |
| description | A challenge for developing acoustic metamaterials (AMMs) is considering the application of broadband muffling and load bearing capacity simultaneously. In this paper, a honeycomb based graded AMM muffler is proposed, which can widen the attenuation band and improve the structural stiffness without any external device by means of integrated design. Firstly, the acoustic and mechanical characteristics of the muffler unit cell are theoretically and numerically studied, and the graded muffler is designed based on these characteristics. The numerical results show that the graded muffler widens the attenuation bandwidth of the unit cell, and the simulation also shows that the graded muffler has greater stiffness than the uniform one. The stiffness driven muffler provides new possibilities for the design of advanced metamaterial with simultaneous sound insulation and load bearing performances. |
| first_indexed | 2024-04-10T00:08:51Z |
| format | Article |
| id | doaj.art-6ddc5ee6d2b6472a909aa12cb50c38c6 |
| institution | Directory Open Access Journal |
| issn | 0137-5075 2300-262X |
| language | English |
| last_indexed | 2024-04-10T00:08:51Z |
| publishDate | 2022-06-01 |
| publisher | Institute of Fundamental Technological Research |
| record_format | Article |
| series | Archives of Acoustics |
| spelling | doaj.art-6ddc5ee6d2b6472a909aa12cb50c38c62023-03-16T12:11:36ZengInstitute of Fundamental Technological ResearchArchives of Acoustics0137-50752300-262X2022-06-01vol. 47No 2213221https://doi.org/10.24425/aoa.2022.141651A Honeycomb Based Graded Metamaterial Muffler with Broadband Sound Attenuation and Load Bearing PerformancesGen Li0Yan Chen1Huan He2State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaState Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaState Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaA challenge for developing acoustic metamaterials (AMMs) is considering the application of broadband muffling and load bearing capacity simultaneously. In this paper, a honeycomb based graded AMM muffler is proposed, which can widen the attenuation band and improve the structural stiffness without any external device by means of integrated design. Firstly, the acoustic and mechanical characteristics of the muffler unit cell are theoretically and numerically studied, and the graded muffler is designed based on these characteristics. The numerical results show that the graded muffler widens the attenuation bandwidth of the unit cell, and the simulation also shows that the graded muffler has greater stiffness than the uniform one. The stiffness driven muffler provides new possibilities for the design of advanced metamaterial with simultaneous sound insulation and load bearing performances.https://journals.pan.pl/Content/123490/PDF/aoa.2022.141651.pdfacoustic metamaterialshoneycomb structurephononic crystallocal resonance |
| spellingShingle | Gen Li Yan Chen Huan He A Honeycomb Based Graded Metamaterial Muffler with Broadband Sound Attenuation and Load Bearing Performances Archives of Acoustics acoustic metamaterials honeycomb structure phononic crystal local resonance |
| title | A Honeycomb Based Graded Metamaterial Muffler with Broadband Sound Attenuation and Load Bearing Performances |
| title_full | A Honeycomb Based Graded Metamaterial Muffler with Broadband Sound Attenuation and Load Bearing Performances |
| title_fullStr | A Honeycomb Based Graded Metamaterial Muffler with Broadband Sound Attenuation and Load Bearing Performances |
| title_full_unstemmed | A Honeycomb Based Graded Metamaterial Muffler with Broadband Sound Attenuation and Load Bearing Performances |
| title_short | A Honeycomb Based Graded Metamaterial Muffler with Broadband Sound Attenuation and Load Bearing Performances |
| title_sort | honeycomb based graded metamaterial muffler with broadband sound attenuation and load bearing performances |
| topic | acoustic metamaterials honeycomb structure phononic crystal local resonance |
| url | https://journals.pan.pl/Content/123490/PDF/aoa.2022.141651.pdf |
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