Acoustic Metamaterials for Low-Frequency Noise Reduction Based on Parallel Connection of Multiple Spiral Chambers
Acoustic metamaterials based on Helmholtz resonance have perfect sound absorption characteristics with the subwavelength size, but the absorption bandwidth is narrow, which limits the practical applications for noise control with broadband. On the basis of the Fabry–Perot resonance principle, a nove...
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MDPI AG
2022-05-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/11/3882 |
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| author | Haiqin Duan Fei Yang Xinmin Shen Qin Yin Enshuai Wang Xiaonan Zhang Xiaocui Yang Cheng Shen Wenqiang Peng |
| author_facet | Haiqin Duan Fei Yang Xinmin Shen Qin Yin Enshuai Wang Xiaonan Zhang Xiaocui Yang Cheng Shen Wenqiang Peng |
| author_sort | Haiqin Duan |
| collection | DOAJ |
| description | Acoustic metamaterials based on Helmholtz resonance have perfect sound absorption characteristics with the subwavelength size, but the absorption bandwidth is narrow, which limits the practical applications for noise control with broadband. On the basis of the Fabry–Perot resonance principle, a novel sound absorber of the acoustic metamaterial by parallel connection of the multiple spiral chambers (abbreviated as MSC-AM) is proposed and investigated in this research. Through the theoretical modeling, finite element simulation, sample preparation and experimental validation, the effectiveness and practicability of the MSC-AM are verified. Actual sound absorption coefficients of the MSC-AM in the frequency range of 360–680 Hz (with the bandwidth Δ<i>f</i><sub>1</sub> = 320 Hz) are larger than 0.8, which exhibit the extraordinarily low-frequency sound absorption performance. Moreover, actual sound absorption coefficients are above 0.5 in the 350–1600 Hz range (with a bandwidth Δ<i>f</i><sub>2</sub> = 1250 Hz), which achieve broadband sound absorption in the low–middle frequency range. According to various actual demands, the structural parameters can be adjusted flexibly to realize the customization of sound absorption bandwidth, which provides a novel way to design and improve acoustic metamaterials to reduce the noise with various frequency bands and has promising prospects of application in low-frequency sound absorption. |
| first_indexed | 2024-03-10T01:08:24Z |
| format | Article |
| id | doaj.art-7621495506f742b58838923a7853cbb5 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T01:08:24Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-7621495506f742b58838923a7853cbb52023-11-23T14:21:50ZengMDPI AGMaterials1996-19442022-05-011511388210.3390/ma15113882Acoustic Metamaterials for Low-Frequency Noise Reduction Based on Parallel Connection of Multiple Spiral ChambersHaiqin Duan0Fei Yang1Xinmin Shen2Qin Yin3Enshuai Wang4Xiaonan Zhang5Xiaocui Yang6Cheng Shen7Wenqiang Peng8College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, ChinaCollege of Field Engineering, Army Engineering University of PLA, Nanjing 210007, ChinaCollege of Field Engineering, Army Engineering University of PLA, Nanjing 210007, ChinaCollege of Field Engineering, Army Engineering University of PLA, Nanjing 210007, ChinaCollege of Field Engineering, Army Engineering University of PLA, Nanjing 210007, ChinaCollege of Field Engineering, Army Engineering University of PLA, Nanjing 210007, 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, ChinaCollege of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, ChinaAcoustic metamaterials based on Helmholtz resonance have perfect sound absorption characteristics with the subwavelength size, but the absorption bandwidth is narrow, which limits the practical applications for noise control with broadband. On the basis of the Fabry–Perot resonance principle, a novel sound absorber of the acoustic metamaterial by parallel connection of the multiple spiral chambers (abbreviated as MSC-AM) is proposed and investigated in this research. Through the theoretical modeling, finite element simulation, sample preparation and experimental validation, the effectiveness and practicability of the MSC-AM are verified. Actual sound absorption coefficients of the MSC-AM in the frequency range of 360–680 Hz (with the bandwidth Δ<i>f</i><sub>1</sub> = 320 Hz) are larger than 0.8, which exhibit the extraordinarily low-frequency sound absorption performance. Moreover, actual sound absorption coefficients are above 0.5 in the 350–1600 Hz range (with a bandwidth Δ<i>f</i><sub>2</sub> = 1250 Hz), which achieve broadband sound absorption in the low–middle frequency range. According to various actual demands, the structural parameters can be adjusted flexibly to realize the customization of sound absorption bandwidth, which provides a novel way to design and improve acoustic metamaterials to reduce the noise with various frequency bands and has promising prospects of application in low-frequency sound absorption.https://www.mdpi.com/1996-1944/15/11/3882acoustic metamaterialnoise controlmultiple spiral chambersFabry–Perot resonancelow-frequency sound absorptionfinite element simulation |
| spellingShingle | Haiqin Duan Fei Yang Xinmin Shen Qin Yin Enshuai Wang Xiaonan Zhang Xiaocui Yang Cheng Shen Wenqiang Peng Acoustic Metamaterials for Low-Frequency Noise Reduction Based on Parallel Connection of Multiple Spiral Chambers Materials acoustic metamaterial noise control multiple spiral chambers Fabry–Perot resonance low-frequency sound absorption finite element simulation |
| title | Acoustic Metamaterials for Low-Frequency Noise Reduction Based on Parallel Connection of Multiple Spiral Chambers |
| title_full | Acoustic Metamaterials for Low-Frequency Noise Reduction Based on Parallel Connection of Multiple Spiral Chambers |
| title_fullStr | Acoustic Metamaterials for Low-Frequency Noise Reduction Based on Parallel Connection of Multiple Spiral Chambers |
| title_full_unstemmed | Acoustic Metamaterials for Low-Frequency Noise Reduction Based on Parallel Connection of Multiple Spiral Chambers |
| title_short | Acoustic Metamaterials for Low-Frequency Noise Reduction Based on Parallel Connection of Multiple Spiral Chambers |
| title_sort | acoustic metamaterials for low frequency noise reduction based on parallel connection of multiple spiral chambers |
| topic | acoustic metamaterial noise control multiple spiral chambers Fabry–Perot resonance low-frequency sound absorption finite element simulation |
| url | https://www.mdpi.com/1996-1944/15/11/3882 |
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