中国物理B ›› 2025, Vol. 34 ›› Issue (1): 14303-014303.doi: 10.1088/1674-1056/ad8fa2

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Overcoming bandwidth limitations in space-coiled acoustic metamaterials through inclined perforated plate design

Jixin Liu(刘继鑫)1, Fengmin Wu(吴丰民)1,3†, Ting Li(李婷)1, Junjun Wang(王军军)1, Xinye Zou(邹欣晔)2‡, and Dong Zhang(章东)1,2,3§   

  1. 1 Department of Applied Physics, School of Science, Harbin University of Science and Technology, Harbin 150080, China;
    2 Key Laboratory of Modern Acoustics (MOE), Department of Physics, Collaborative Innovation Center of Advanced Microstructure, Nanjing University, Nanjing 210093, China;
    3 Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
  • 收稿日期:2024-10-03 修回日期:2024-11-04 接受日期:2024-11-07 发布日期:2024-12-24
  • 通讯作者: Fengmin Wu, Xinye Zou, Dong Zhang E-mail:fmwu@hrbust.edu.cn;xyzou@nju.edu.cn;dzhang@nju.edu.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No. 2022YFB3204303), the National Natural Science Foundation of China (Grant No. 11934009), the Fundamental Research Funds for the Central Universities (Grant No. 020414380195), and the Foundation of State Key Laboratory of Ultrasound in Medicine and Engineering (Grant No. 2022KFKT021).

Overcoming bandwidth limitations in space-coiled acoustic metamaterials through inclined perforated plate design

Jixin Liu(刘继鑫)1, Fengmin Wu(吴丰民)1,3†, Ting Li(李婷)1, Junjun Wang(王军军)1, Xinye Zou(邹欣晔)2‡, and Dong Zhang(章东)1,2,3§   

  1. 1 Department of Applied Physics, School of Science, Harbin University of Science and Technology, Harbin 150080, China;
    2 Key Laboratory of Modern Acoustics (MOE), Department of Physics, Collaborative Innovation Center of Advanced Microstructure, Nanjing University, Nanjing 210093, China;
    3 Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
  • Received:2024-10-03 Revised:2024-11-04 Accepted:2024-11-07 Published:2024-12-24
  • Contact: Fengmin Wu, Xinye Zou, Dong Zhang E-mail:fmwu@hrbust.edu.cn;xyzou@nju.edu.cn;dzhang@nju.edu.cn
  • About author:2025-014303-241437.pdf
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No. 2022YFB3204303), the National Natural Science Foundation of China (Grant No. 11934009), the Fundamental Research Funds for the Central Universities (Grant No. 020414380195), and the Foundation of State Key Laboratory of Ultrasound in Medicine and Engineering (Grant No. 2022KFKT021).

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摘要： Traditional space-coiled acoustic metamaterials have been widely used in the fields of low-frequency sound absorption and noise reduction. However, they have limitations in terms of low-frequency absorption bandwidth, and the weak coupling effect under complex coiled structures also limits their applications. In this work, we introduce the composite structure changing the characteristic impedance of acoustic metamaterials to enhance the coupling effect. Meanwhile, the perforated plates with inclined design instead of traditional partitions greatly improve the sound absorption. The model and method designed in this paper show significant innovation in enhancing low-frequency absorption performance.

关键词: metamaterials, composite structure, over-damped modes coupling, sound absorption

Abstract: Traditional space-coiled acoustic metamaterials have been widely used in the fields of low-frequency sound absorption and noise reduction. However, they have limitations in terms of low-frequency absorption bandwidth, and the weak coupling effect under complex coiled structures also limits their applications. In this work, we introduce the composite structure changing the characteristic impedance of acoustic metamaterials to enhance the coupling effect. Meanwhile, the perforated plates with inclined design instead of traditional partitions greatly improve the sound absorption. The model and method designed in this paper show significant innovation in enhancing low-frequency absorption performance.

Key words: metamaterials, composite structure, over-damped modes coupling, sound absorption

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

  • 43.35.+d
43.40.+s (Structural acoustics and vibration) 43.50.+y (Noise: its effects and control)