Sound absorbing properties of spiral metasurfaces inspired by micro-perforated plates

IF 3.2 3区工程技术 Q2 MECHANICS Theoretical and Applied Mechanics Letters Pub Date : 2023-05-01 DOI:10.1016/j.taml.2023.100437

Han Zhang , Pengxiang Hao , Huilan Wu , Zhenyuan Lin , Chengpeng Hao , Zhengpan Qi , Ning Hu

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Abstract

As a kind of classical low-frequency sound-absorbing material, the microperforated plate (MPP) has been widely used. Here, we inspired by the sound absorption mechanism of the MPP, a spiral metasurface (SM) is designed and the analytical solution of acoustic impedance and sound absorption coefficient are obtained. The relationship between the sound absorption properties of the MPP and the SM with their own structures is systematically studied, and the analytical solutions are used to optimise the structure. It is concluded that the MPP and the SM of the same thickness achieve effective absorption in the frequency range between 390-900 Hz and 1920-4266 Hz, with a total thickness less than 1/6 of the wavelength. Meanwhile, the numerical calculation shows that the MPP and SM can match well with the background medium in the effective rang. Our study provides new insights into the design methods of sound-absorbing materials and is potentially suitable for many acoustic engineering applications.

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微孔板激励下螺旋超表面的吸声特性

微孔板作为一种经典的低频吸声材料，得到了广泛的应用。本文受MPP吸声机理的启发，设计了一种螺旋超表面(SM)，得到了其声阻抗和吸声系数的解析解。系统研究了MPP和SM吸声性能与各自结构之间的关系，并利用解析解对结构进行优化。结果表明，相同厚度的MPP和SM在390 ~ 900 Hz和1920 ~ 4266 Hz的频率范围内均能实现有效吸收，且总厚度小于波长的1/6。同时，数值计算表明，MPP和SM在有效范围内与背景介质匹配良好。我们的研究为吸声材料的设计方法提供了新的见解，并可能适用于许多声学工程应用。

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来源期刊

Theoretical and Applied Mechanics Letters MECHANICS-

CiteScore

6.20

自引率

2.90%

发文量

545

审稿时长

12 weeks

期刊介绍： An international journal devoted to rapid communications on novel and original research in the field of mechanics. TAML aims at publishing novel, cutting edge researches in theoretical, computational, and experimental mechanics. The journal provides fast publication of letter-sized articles and invited reviews within 3 months. We emphasize highlighting advances in science, engineering, and technology with originality and rapidity. Contributions include, but are not limited to, a variety of topics such as: • Aerospace and Aeronautical Engineering • Coastal and Ocean Engineering • Environment and Energy Engineering • Material and Structure Engineering • Biomedical Engineering • Mechanical and Transportation Engineering • Civil and Hydraulic Engineering Theoretical and Applied Mechanics Letters (TAML) was launched in 2011 and sponsored by Institute of Mechanics, Chinese Academy of Sciences (IMCAS) and The Chinese Society of Theoretical and Applied Mechanics (CSTAM). It is the official publication the Beijing International Center for Theoretical and Applied Mechanics (BICTAM).