A multifunctional acoustic emission enhancement meta-structure illustrated by the eccentric source

IF 3.4 2区物理与天体物理 Q1 ACOUSTICS

Applied Acoustics Pub Date : 2025-05-09 DOI:10.1016/j.apacoust.2025.110810

Yunzhong Lei, Jiu Hui Wu, Mengqi Yuan, Wei Li, Tengyue Zheng

引用次数: 0

Abstract

Here, an acoustic meta-structure composed of a central cavity, straight channels and channels with side cavities is proposed to achieve multifunctional acoustic emission enhancement, i.e., omnidirectional and directional acoustic emission enhancement. Theoretical and simulation results show that the eccentric source can excite monopole resonance, multipole resonances, and resonance of channels with side cavities in the meta-structure to improve the radiation resistance of the eccentric source and enhance acoustic emission. Monopole resonance and resonance of channels with side cavities realize the self-centering of the eccentric source, resulting in enhanced omnidirectional acoustic emission. Multipole resonances in the meta-structure can achieve enhanced directional acoustic emission. Experiments confirm the theoretical and simulation results and show the significant potential in acoustic communication.

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以偏心源为例的多功能声发射增强元结构

本文提出了一种由中心腔、直腔和带侧腔的通道组成的声元结构，以实现多功能声发射增强，即全方位声发射增强和定向声发射增强。理论和仿真结果表明，偏心源可以激发元结构中单极共振、多极共振和带侧腔通道的共振，从而提高偏心源的抗辐射能力，增强声发射。单极子共振和带侧腔通道共振实现了偏心源的自定心，增强了全向声发射。元结构中的多极共振可以增强定向声发射。实验验证了理论和仿真结果，显示了该方法在声通信领域的巨大潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Acoustics 物理-声学

CiteScore

7.40

自引率

11.80%

发文量

618

审稿时长

7.5 months

期刊介绍： Since its launch in 1968, Applied Acoustics has been publishing high quality research papers providing state-of-the-art coverage of research findings for engineers and scientists involved in applications of acoustics in the widest sense. Applied Acoustics looks not only at recent developments in the understanding of acoustics but also at ways of exploiting that understanding. The Journal aims to encourage the exchange of practical experience through publication and in so doing creates a fund of technological information that can be used for solving related problems. The presentation of information in graphical or tabular form is especially encouraged. If a report of a mathematical development is a necessary part of a paper it is important to ensure that it is there only as an integral part of a practical solution to a problem and is supported by data. Applied Acoustics encourages the exchange of practical experience in the following ways: • Complete Papers • Short Technical Notes • Review Articles; and thereby provides a wealth of technological information that can be used to solve related problems. Manuscripts that address all fields of applications of acoustics ranging from medicine and NDT to the environment and buildings are welcome.