Applied Mathematics and Mechanics (English Edition) ›› 2020, Vol. 41 ›› Issue (2): 279-288.doi: https://doi.org/10.1007/s10483-020-2568-7

• 论文 • 上一篇    下一篇

Merging phononic crystals and acoustic black holes

Xiaofei LYU1, Qian DING1,2, Tianzhi YANG1,2   

  1. 1. Department of Mechanics, Tianjin University, Tianjin 300350, China;
    2. Tianjin Key Laboratory of Nonlinear Dynamics and Control, Tianjin 300350, China
  • 收稿日期:2019-08-17 修回日期:2019-11-18 发布日期:2020-01-03
  • 通讯作者: Tianzhi YANG E-mail:yangtz@tju.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Nos. 51575378, 11972245, and 11672187)

Merging phononic crystals and acoustic black holes

Xiaofei LYU1, Qian DING1,2, Tianzhi YANG1,2   

  1. 1. Department of Mechanics, Tianjin University, Tianjin 300350, China;
    2. Tianjin Key Laboratory of Nonlinear Dynamics and Control, Tianjin 300350, China
  • Received:2019-08-17 Revised:2019-11-18 Published:2020-01-03
  • Contact: Tianzhi YANG E-mail:yangtz@tju.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Nos. 51575378, 11972245, and 11672187)

摘要: Phononic crystals (PCs) have recently been developed as effective components for vibration suppression and sound absorption. As a typical design of PCs, wave attenuation occurs in the so-called stop-band. However, the structural response is still significantly large in the pass-band. In this paper, we combine PCs and acoustic black holes (ABHs) in a unique device, achieving a versatile device that can attenuate vibration in the stop-band, while suppress vibration in the pass-band. This approach provides a versatile platform for controlling vibration in a multiband with a simple design.

关键词: acoustic black hole (ABH), phononic crystal (PC), transfer matrix method (TMM)

Abstract: Phononic crystals (PCs) have recently been developed as effective components for vibration suppression and sound absorption. As a typical design of PCs, wave attenuation occurs in the so-called stop-band. However, the structural response is still significantly large in the pass-band. In this paper, we combine PCs and acoustic black holes (ABHs) in a unique device, achieving a versatile device that can attenuate vibration in the stop-band, while suppress vibration in the pass-band. This approach provides a versatile platform for controlling vibration in a multiband with a simple design.

Key words: acoustic black hole (ABH), phononic crystal (PC), transfer matrix method (TMM)

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