Merging phononic crystals and acoustic black holes |
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Authors: | Xiaofei LYU Qian DING Tianzhi YANG |
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Institution: | 1. Department of Mechanics, Tianjin University, Tianjin 300350, China;2. Tianjin Key Laboratory of Nonlinear Dynamics and Control, Tianjin 300350, China |
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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. |
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Keywords: | acoustic black hole (ABH) phononic crystal (PC) transfer matrix method (TMM) |
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