An Investigation of Modular Composable Acoustic Metamaterials with Multiple Nonunique Chambers
To make the sound absorber easy to fabricate and convenient for practical application, a modular composable acoustic metamaterial with multiple nonunique chambers (MCAM–MNCs) was proposed and investigated, which was divided into a front panel with the same perforated apertures and a rear chamber wit...
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MDPI AG
2023-12-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/24/7627 |
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| author | Xiaocui Yang Xinmin Shen Daochun Hu Xiaoyong Wang Haichao Song Rongxing Zhao Chunmei Zhang Cheng Shen Mengna Yang |
| author_facet | Xiaocui Yang Xinmin Shen Daochun Hu Xiaoyong Wang Haichao Song Rongxing Zhao Chunmei Zhang Cheng Shen Mengna Yang |
| author_sort | Xiaocui Yang |
| collection | DOAJ |
| description | To make the sound absorber easy to fabricate and convenient for practical application, a modular composable acoustic metamaterial with multiple nonunique chambers (MCAM–MNCs) was proposed and investigated, which was divided into a front panel with the same perforated apertures and a rear chamber with a nonunique grouped cavity. Through the acoustic finite element simulation, the parametric studies of the diameter of aperture d, depth of chamber T0, and thickness of panel t0 were conducted, which could tune the sound absorption performances of MCAM–MNCs–1 and MCAM–MNCs–2 for the expected noise reduction effect. The effective sound absorption band of MCAM–MNCs–1 was 556 Hz (773–1329 Hz), 456 Hz (646–1102 Hz), and 387 Hz (564–951 Hz) for T = 30 mm, T = 40 mm, and T = 50 mm, respectively, and the corresponding average sound absorption coefficient was 0.8696, 0.8854, and 0.8916, accordingly, which exhibited excellent noise attenuation performance. The sound absorption mechanism of MCAM–MNCs was investigated by the distributions of the total sound energy density (TSED). The components used to assemble the MCAM–MNCs sample were fabricated by additive manufacturing, and its actual sound absorption coefficients were tested according to the transfer matrix method, which demonstrated its feasibility and promoted its actual application. |
| first_indexed | 2024-03-08T20:33:57Z |
| format | Article |
| id | doaj.art-87e70298825c4d6f8880714733b0ab56 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-08T20:33:57Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-87e70298825c4d6f8880714733b0ab562023-12-22T14:22:52ZengMDPI AGMaterials1996-19442023-12-011624762710.3390/ma16247627An Investigation of Modular Composable Acoustic Metamaterials with Multiple Nonunique ChambersXiaocui Yang0Xinmin Shen1Daochun Hu2Xiaoyong Wang3Haichao Song4Rongxing Zhao5Chunmei Zhang6Cheng Shen7Mengna Yang8Engineering Training Center, Nanjing Vocational University of Industry Technology, Nanjing 210023, ChinaField Engineering College, Army Engineering University of PLA, Nanjing 210007, ChinaEngineering Training Center, Nanjing Vocational University of Industry Technology, Nanjing 210023, ChinaEngineering Training Center, Nanjing Vocational University of Industry Technology, Nanjing 210023, ChinaEngineering Training Center, Nanjing Vocational University of Industry Technology, Nanjing 210023, ChinaEngineering Training Center, Nanjing Vocational University of Industry Technology, Nanjing 210023, ChinaEngineering Training Center, Nanjing Vocational University of Industry Technology, Nanjing 210023, ChinaMIIT Key Laboratory of Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaEngineering Training Center, Nanjing Vocational University of Industry Technology, Nanjing 210023, ChinaTo make the sound absorber easy to fabricate and convenient for practical application, a modular composable acoustic metamaterial with multiple nonunique chambers (MCAM–MNCs) was proposed and investigated, which was divided into a front panel with the same perforated apertures and a rear chamber with a nonunique grouped cavity. Through the acoustic finite element simulation, the parametric studies of the diameter of aperture d, depth of chamber T0, and thickness of panel t0 were conducted, which could tune the sound absorption performances of MCAM–MNCs–1 and MCAM–MNCs–2 for the expected noise reduction effect. The effective sound absorption band of MCAM–MNCs–1 was 556 Hz (773–1329 Hz), 456 Hz (646–1102 Hz), and 387 Hz (564–951 Hz) for T = 30 mm, T = 40 mm, and T = 50 mm, respectively, and the corresponding average sound absorption coefficient was 0.8696, 0.8854, and 0.8916, accordingly, which exhibited excellent noise attenuation performance. The sound absorption mechanism of MCAM–MNCs was investigated by the distributions of the total sound energy density (TSED). The components used to assemble the MCAM–MNCs sample were fabricated by additive manufacturing, and its actual sound absorption coefficients were tested according to the transfer matrix method, which demonstrated its feasibility and promoted its actual application.https://www.mdpi.com/1996-1944/16/24/7627modular composable acoustic metamaterialnoise reductionmultiple nonunique chamberssound absorption performanceparametric studysound absorption mechanism |
| spellingShingle | Xiaocui Yang Xinmin Shen Daochun Hu Xiaoyong Wang Haichao Song Rongxing Zhao Chunmei Zhang Cheng Shen Mengna Yang An Investigation of Modular Composable Acoustic Metamaterials with Multiple Nonunique Chambers Materials modular composable acoustic metamaterial noise reduction multiple nonunique chambers sound absorption performance parametric study sound absorption mechanism |
| title | An Investigation of Modular Composable Acoustic Metamaterials with Multiple Nonunique Chambers |
| title_full | An Investigation of Modular Composable Acoustic Metamaterials with Multiple Nonunique Chambers |
| title_fullStr | An Investigation of Modular Composable Acoustic Metamaterials with Multiple Nonunique Chambers |
| title_full_unstemmed | An Investigation of Modular Composable Acoustic Metamaterials with Multiple Nonunique Chambers |
| title_short | An Investigation of Modular Composable Acoustic Metamaterials with Multiple Nonunique Chambers |
| title_sort | investigation of modular composable acoustic metamaterials with multiple nonunique chambers |
| topic | modular composable acoustic metamaterial noise reduction multiple nonunique chambers sound absorption performance parametric study sound absorption mechanism |
| url | https://www.mdpi.com/1996-1944/16/24/7627 |
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