中国物理B ›› 2023, Vol. 32 ›› Issue (12): 124303-124303.doi: 10.1088/1674-1056/acf5d1

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Ultra-broadband acoustic ventilation barrier based on multi-cavity resonators

Yu-Wei Xu(许雨薇)1, Yi-Jun Guan(管义钧)1,2,†, Cheng-Hao Wu(吴成昊)1, Yong Ge(葛勇)1, Qiao-Rui Si(司乔瑞)1, Shou-Qi Yuan(袁寿其)1,‡, and Hong-Xiang Sun(孙宏祥)1,2,§   

  1. 1 Research Center of Fluid Machinery Engineering and Technology, School of Physics and Electronic Engineering, Jiangsu University, Zhenjiang 212013, China;
    2 State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2023-06-02 修回日期:2023-07-27 接受日期:2023-09-01 出版日期:2023-11-14 发布日期:2023-11-27
  • 通讯作者: Yi-Jun Guan, Shou-Qi Yuan, Hong-Xiang Sun E-mail:gyjlxy@ujs.edu.cn;Shouqiy@ujs.edu.cn;jsdxshx@ujs.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos.12174159, 12274183, and 51976079), the National Key Research and Development Program of China (Grant No.2020YFC1512403), and the Research Project of State Key Laboratory of Mechanical System and Vibration (Grant No.MSV202201).

Ultra-broadband acoustic ventilation barrier based on multi-cavity resonators

Yu-Wei Xu(许雨薇)1, Yi-Jun Guan(管义钧)1,2,†, Cheng-Hao Wu(吴成昊)1, Yong Ge(葛勇)1, Qiao-Rui Si(司乔瑞)1, Shou-Qi Yuan(袁寿其)1,‡, and Hong-Xiang Sun(孙宏祥)1,2,§   

  1. 1 Research Center of Fluid Machinery Engineering and Technology, School of Physics and Electronic Engineering, Jiangsu University, Zhenjiang 212013, China;
    2 State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2023-06-02 Revised:2023-07-27 Accepted:2023-09-01 Online:2023-11-14 Published:2023-11-27
  • Contact: Yi-Jun Guan, Shou-Qi Yuan, Hong-Xiang Sun E-mail:gyjlxy@ujs.edu.cn;Shouqiy@ujs.edu.cn;jsdxshx@ujs.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos.12174159, 12274183, and 51976079), the National Key Research and Development Program of China (Grant No.2020YFC1512403), and the Research Project of State Key Laboratory of Mechanical System and Vibration (Grant No.MSV202201).

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摘要： The numerical simulations and experimental results of an ultra-broadband acoustic ventilation barrier composed of periodic unit cells are reported in this paper. Based on multiple mechanisms, including sound absorption by eigenmodes of the unit cell and sound reflection by a plate structure on upper surface of the unit cell, a single-layer ventilation barrier with broadband sound reduction is designed, and its working bandwidth can reach about 1560 Hz. The experimental results accord well with the simulation results. Furthermore, two types of three-layer ventilation barriers are designed and demonstrated by using the unit cells with different values of a(the length of the hollow square region) and w(the width of the channel between the adjacent cavities), and the bandwidths of both ventilation barriers can increase to 3160 Hz and 3230 Hz, respectively. The designed barrier structures have the advantages of ultra-broadband sound reduction and ventilation, which paves the way to designing high-performance ventilation barriers for the applications in environmental protection and architectural acoustics.

关键词: acoustic metamaterials, ultra-broadband sound reduction, acoustic barrier, ventilation

Abstract: The numerical simulations and experimental results of an ultra-broadband acoustic ventilation barrier composed of periodic unit cells are reported in this paper. Based on multiple mechanisms, including sound absorption by eigenmodes of the unit cell and sound reflection by a plate structure on upper surface of the unit cell, a single-layer ventilation barrier with broadband sound reduction is designed, and its working bandwidth can reach about 1560 Hz. The experimental results accord well with the simulation results. Furthermore, two types of three-layer ventilation barriers are designed and demonstrated by using the unit cells with different values of a(the length of the hollow square region) and w(the width of the channel between the adjacent cavities), and the bandwidths of both ventilation barriers can increase to 3160 Hz and 3230 Hz, respectively. The designed barrier structures have the advantages of ultra-broadband sound reduction and ventilation, which paves the way to designing high-performance ventilation barriers for the applications in environmental protection and architectural acoustics.

Key words: acoustic metamaterials, ultra-broadband sound reduction, acoustic barrier, ventilation

中图分类号:  (Ultrasonics, quantum acoustics, and physical effects of sound)

  • 43.35.+d
43.20.+g (General linear acoustics)