首页|Underwater Directional Acoustic Source Based on Pentamode Material

Underwater Directional Acoustic Source Based on Pentamode Material

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An underwater directional acoustic emitter is conceived with a highly anisotropic lattice material,whose acoustic charac-teristics manifest strong dependence on the orientation of the lattice material's principal axis.Exploiting these features,a cylindrical structure made of such anisotropic lattice material is engineered to possess distinct impedance values in different directions,thereby facilitating wave emission along the principal axis while inducing reflection in other directions.Notably,through numerical simulations,it is demonstrated that the emission direction can be effectively manipulated by adjusting the principal axis orientation,concurrently enhancing the emitted power.In contrast to previous directional acoustic struc-tures,the compact emitter presented in this study can get rid of the size-wavelength constraint,enabling effective control of low-frequency waves.

UnderwaterDirectional emissionPentamode materialBroadband frequency

Binghao Zhao、Peng Wang、Dongwei Wang、Gengkai Hu

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School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China

Wuhan Second Ship Design and Research Institute,Wuhan 430205,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

11991030119910331220205411802017

2024

10.1007/s10338-023-00442-8

固体力学学报(英文版)
中国力学学会

固体力学学报(英文版)

EI
影响因子：0.214
ISSN：0894-9166
年,卷(期)：2024.37(1)
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