Mechanism of effective depth enhancement and broadband sound absorption optimization in nested resonators with multiple cross-sections
This study presents a class of three-layer nested sound absorption resonators with multiple cross-sectional features, revealing their sub-wavelength characteristics and broadband sound absorption potential through a series of studies. A precise effective depth calculation method has been proposed to...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S026412752500560X |
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| author | Yiming Zhao Zichao Guo Jie Ye Zhendong Li Kexin Zeng Xinying Lu Zhonggang Wang |
| author_facet | Yiming Zhao Zichao Guo Jie Ye Zhendong Li Kexin Zeng Xinying Lu Zhonggang Wang |
| author_sort | Yiming Zhao |
| collection | DOAJ |
| description | This study presents a class of three-layer nested sound absorption resonators with multiple cross-sectional features, revealing their sub-wavelength characteristics and broadband sound absorption potential through a series of studies. A precise effective depth calculation method has been proposed to characterize its sound absorption mechanism and the low-frequency shift phenomenon of the sound absorption spectrum caused by the coupling mechanism between discontinuous sections and bent cavities. Experimental verification has demonstrated the feasibility of this method. Parameterization and optimization studies have shown that the outer cavity reduces the actual thickness by approximately 20 % when creating a long-wavelength resonant cavity. The two-dimensional stretched rectangular and equilateral triangular sections exhibit larger effective volumes, resulting in more compact effective sound absorption spectral curves. When the thicknesses of both the optimized 3-layered single unit and the parallel structure are 63 mm, the achieved broadband sound absorption effectively covers the frequency ranges of 365∼790 Hz and 480∼1450 Hz, respectively. This research provides a basic optimization strategy for improving broadband low-frequency sound absorption in nested resonators. |
| format | Article |
| id | doaj-art-7073c898ea8c46588bef034df1563155 |
| institution | OA Journals |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-7073c898ea8c46588bef034df15631552025-08-20T02:37:06ZengElsevierMaterials & Design0264-12752025-07-0125511414010.1016/j.matdes.2025.114140Mechanism of effective depth enhancement and broadband sound absorption optimization in nested resonators with multiple cross-sectionsYiming Zhao0Zichao Guo1Jie Ye2Zhendong Li3Kexin Zeng4Xinying Lu5Zhonggang Wang6School of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, China; Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, China; The State Key Laboratory of Heavy-duty and Express High-power Electric Locomotive, Changsha, Hunan, China; National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Central South University, Changsha 410075, ChinaSchool of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, China; Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, China; The State Key Laboratory of Heavy-duty and Express High-power Electric Locomotive, Changsha, Hunan, China; National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Central South University, Changsha 410075, ChinaSchool of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, China; Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, China; The State Key Laboratory of Heavy-duty and Express High-power Electric Locomotive, Changsha, Hunan, China; National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Central South University, Changsha 410075, ChinaSchool of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, China; Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, China; The State Key Laboratory of Heavy-duty and Express High-power Electric Locomotive, Changsha, Hunan, China; National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Central South University, Changsha 410075, China; Department of Mechanical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR 999077, ChinaSchool of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, China; Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, China; The State Key Laboratory of Heavy-duty and Express High-power Electric Locomotive, Changsha, Hunan, China; National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Central South University, Changsha 410075, ChinaSchool of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, China; Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, China; The State Key Laboratory of Heavy-duty and Express High-power Electric Locomotive, Changsha, Hunan, China; National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Central South University, Changsha 410075, ChinaSchool of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, China; Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, China; The State Key Laboratory of Heavy-duty and Express High-power Electric Locomotive, Changsha, Hunan, China; National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Central South University, Changsha 410075, China; Corresponding author at: School of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, China.This study presents a class of three-layer nested sound absorption resonators with multiple cross-sectional features, revealing their sub-wavelength characteristics and broadband sound absorption potential through a series of studies. A precise effective depth calculation method has been proposed to characterize its sound absorption mechanism and the low-frequency shift phenomenon of the sound absorption spectrum caused by the coupling mechanism between discontinuous sections and bent cavities. Experimental verification has demonstrated the feasibility of this method. Parameterization and optimization studies have shown that the outer cavity reduces the actual thickness by approximately 20 % when creating a long-wavelength resonant cavity. The two-dimensional stretched rectangular and equilateral triangular sections exhibit larger effective volumes, resulting in more compact effective sound absorption spectral curves. When the thicknesses of both the optimized 3-layered single unit and the parallel structure are 63 mm, the achieved broadband sound absorption effectively covers the frequency ranges of 365∼790 Hz and 480∼1450 Hz, respectively. This research provides a basic optimization strategy for improving broadband low-frequency sound absorption in nested resonators.http://www.sciencedirect.com/science/article/pii/S026412752500560XThree-layer nested resonatorsMultiple cross-sectionalLow-frequency shiftOptimization studyAcoustic metamaterial |
| spellingShingle | Yiming Zhao Zichao Guo Jie Ye Zhendong Li Kexin Zeng Xinying Lu Zhonggang Wang Mechanism of effective depth enhancement and broadband sound absorption optimization in nested resonators with multiple cross-sections Materials & Design Three-layer nested resonators Multiple cross-sectional Low-frequency shift Optimization study Acoustic metamaterial |
| title | Mechanism of effective depth enhancement and broadband sound absorption optimization in nested resonators with multiple cross-sections |
| title_full | Mechanism of effective depth enhancement and broadband sound absorption optimization in nested resonators with multiple cross-sections |
| title_fullStr | Mechanism of effective depth enhancement and broadband sound absorption optimization in nested resonators with multiple cross-sections |
| title_full_unstemmed | Mechanism of effective depth enhancement and broadband sound absorption optimization in nested resonators with multiple cross-sections |
| title_short | Mechanism of effective depth enhancement and broadband sound absorption optimization in nested resonators with multiple cross-sections |
| title_sort | mechanism of effective depth enhancement and broadband sound absorption optimization in nested resonators with multiple cross sections |
| topic | Three-layer nested resonators Multiple cross-sectional Low-frequency shift Optimization study Acoustic metamaterial |
| url | http://www.sciencedirect.com/science/article/pii/S026412752500560X |
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