Labyrinthine acoustic metamaterials with triangular self-similarity for low-frequency sound insulation at deep subwavelength dimensions
Labyrinthine acoustic metamaterials are good choices for realizing sound insulation, acoustic stealth, and acoustic lenses by virtue of their stable performance and rich modes. We design a labyrinthine acoustic metamaterial with eight resonance units by utilizing triangular self-similarity. First, w...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-11-01
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| Series: | Results in Physics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379723009440 |
| _version_ | 1797615963210776576 |
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| author | Ya-jun Xin Rui-ning Huang Peng Li Quan Qian Qun Yan Yong-tao Sun Qian Ding Yu-jie Huang Shu-liang Cheng |
| author_facet | Ya-jun Xin Rui-ning Huang Peng Li Quan Qian Qun Yan Yong-tao Sun Qian Ding Yu-jie Huang Shu-liang Cheng |
| author_sort | Ya-jun Xin |
| collection | DOAJ |
| description | Labyrinthine acoustic metamaterials are good choices for realizing sound insulation, acoustic stealth, and acoustic lenses by virtue of their stable performance and rich modes. We design a labyrinthine acoustic metamaterial with eight resonance units by utilizing triangular self-similarity. First, with the help of eigenstate analysis, it is demonstrated that it has monopolar resonance and multipolar resonance modes. Then, the physical mechanisms that generate transmission valleys and acoustic isolation peaks are analyzed by applying the equivalent medium theory and the vibrational velocity field. Finally, we designed an ultra-sparse distribution (fill rate of 20 %) hypersurface for effective acoustic isolation and noise reduction at 417 Hz (normalized frequency of about λ/12). This study can provide useful assistance in the design of labyrinthine acoustic metamaterials, as well as potential applications in areas where ventilation is required (e.g., acoustic barriers for transportation systems). |
| first_indexed | 2024-03-11T07:34:28Z |
| format | Article |
| id | doaj.art-f6437601162649cc99969f1b70c4ef01 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-03-11T07:34:28Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-f6437601162649cc99969f1b70c4ef012023-11-17T05:26:40ZengElsevierResults in Physics2211-37972023-11-0154107151Labyrinthine acoustic metamaterials with triangular self-similarity for low-frequency sound insulation at deep subwavelength dimensionsYa-jun Xin0Rui-ning Huang1Peng Li2Quan Qian3Qun Yan4Yong-tao Sun5Qian Ding6Yu-jie Huang7Shu-liang Cheng8Hebei Province Engineering Research Center for Harmless Synergistic Treatment and Recycling of Municipal Solid Waste, Yanshan University, Qinhuangdao, China; Hebei High Performance Building Material Technology Innovation Center, Qinhuangdao Municipal Building Materials Group Co. Ltd., Qinhuangdao, China; Corresponding authors.Hebei Province Engineering Research Center for Harmless Synergistic Treatment and Recycling of Municipal Solid Waste, Yanshan University, Qinhuangdao, ChinaHebei Province Engineering Research Center for Harmless Synergistic Treatment and Recycling of Municipal Solid Waste, Yanshan University, Qinhuangdao, ChinaHebei High Performance Building Material Technology Innovation Center, Qinhuangdao Municipal Building Materials Group Co. Ltd., Qinhuangdao, ChinaKey Laboratory of Aeroacoustics and Dynamics, Aircraft Strength Research Institute, Xi’an, ChinaDepartment of Mechanics and Tianjin Key Laboratory of Nonlinear Dynamics and Control, Tianjin University, Tianjin, China; Corresponding authors.Department of Mechanics and Tianjin Key Laboratory of Nonlinear Dynamics and Control, Tianjin University, Tianjin, ChinaHebei Key Laboratory of Mechanical Reliability for Heavy Equipment and Large Structure, Yanshan University, Qinhuangdao, ChinaHebei Key Laboratory of Mechanical Reliability for Heavy Equipment and Large Structure, Yanshan University, Qinhuangdao, ChinaLabyrinthine acoustic metamaterials are good choices for realizing sound insulation, acoustic stealth, and acoustic lenses by virtue of their stable performance and rich modes. We design a labyrinthine acoustic metamaterial with eight resonance units by utilizing triangular self-similarity. First, with the help of eigenstate analysis, it is demonstrated that it has monopolar resonance and multipolar resonance modes. Then, the physical mechanisms that generate transmission valleys and acoustic isolation peaks are analyzed by applying the equivalent medium theory and the vibrational velocity field. Finally, we designed an ultra-sparse distribution (fill rate of 20 %) hypersurface for effective acoustic isolation and noise reduction at 417 Hz (normalized frequency of about λ/12). This study can provide useful assistance in the design of labyrinthine acoustic metamaterials, as well as potential applications in areas where ventilation is required (e.g., acoustic barriers for transportation systems).http://www.sciencedirect.com/science/article/pii/S2211379723009440Coiling up spaceSelf-similarityLow-frequency sound insulationAcoustic metamaterials |
| spellingShingle | Ya-jun Xin Rui-ning Huang Peng Li Quan Qian Qun Yan Yong-tao Sun Qian Ding Yu-jie Huang Shu-liang Cheng Labyrinthine acoustic metamaterials with triangular self-similarity for low-frequency sound insulation at deep subwavelength dimensions Results in Physics Coiling up space Self-similarity Low-frequency sound insulation Acoustic metamaterials |
| title | Labyrinthine acoustic metamaterials with triangular self-similarity for low-frequency sound insulation at deep subwavelength dimensions |
| title_full | Labyrinthine acoustic metamaterials with triangular self-similarity for low-frequency sound insulation at deep subwavelength dimensions |
| title_fullStr | Labyrinthine acoustic metamaterials with triangular self-similarity for low-frequency sound insulation at deep subwavelength dimensions |
| title_full_unstemmed | Labyrinthine acoustic metamaterials with triangular self-similarity for low-frequency sound insulation at deep subwavelength dimensions |
| title_short | Labyrinthine acoustic metamaterials with triangular self-similarity for low-frequency sound insulation at deep subwavelength dimensions |
| title_sort | labyrinthine acoustic metamaterials with triangular self similarity for low frequency sound insulation at deep subwavelength dimensions |
| topic | Coiling up space Self-similarity Low-frequency sound insulation Acoustic metamaterials |
| url | http://www.sciencedirect.com/science/article/pii/S2211379723009440 |
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