Broadband low-transmission study of ventilation metasurfaces based on Archimedean spirals

IF 3.4 2区物理与天体物理 Q1 ACOUSTICS

Applied Acoustics Pub Date : 2024-10-05 DOI:10.1016/j.apacoust.2024.110335

Taoqi Lu , Zhichun Li , Yu Zhang

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引用次数: 0

Abstract

The primary objectives of acoustic material design include ensuring indoor ventilation and isolating external noise. This study introduces a ventilation metamaterial surface based on Archimedean spirals (ASVM) and calculates its energy transmission coefficient using simulation and the Transfer Matrix Method (TMM). Experimental validation confirms the accuracy of the proposed model, highlighting ASVM’s potential as an effective ventilation metamaterial surface. Subsequently, ASVM is integrated with Helmholtz resonators (HR) to create two new metasurfaces: HR-ASVM without a neck and N-HR-ASVM with a neck. The former exhibits a power transmission coefficient below 0.2 across the broadband range of 1300 Hz to 2500 Hz, while the latter demonstrates superior sound insulation performance (power transmission coefficient below 0.1) from 639 Hz to 2500 Hz, with complete transmission suppression at 710 Hz. Notably, the thickness of N-HR-ASVM at this frequency is only 1/13 of the wavelength. Simulations of the acoustic pressure field and energy flow analyze the mechanisms responsible for low transmission. Finally, the energy transmission coefficient of N-HR-ASVM is experimentally measured and found to align closely with simulation results. This study provides valuable insights into the research on spiral ventilation metamaterial surfaces.

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基于阿基米德螺旋的通风元面的宽带低传输研究

声学材料设计的主要目标包括确保室内通风和隔离外部噪音。本研究介绍了一种基于阿基米德螺旋线的通风超材料表面（ASVM），并利用模拟和传递矩阵法（TMM）计算了其能量传输系数。实验验证证实了所提模型的准确性，凸显了 ASVM 作为有效通风超材料表面的潜力。随后，ASVM 与亥姆霍兹谐振器（HR）相结合，创造出两种新的超材料表面：无颈的 HR-ASVM 和有颈的 N-HR-ASVM。前者在 1300 Hz 至 2500 Hz 的宽带范围内功率传输系数低于 0.2，而后者在 639 Hz 至 2500 Hz 范围内具有卓越的隔音性能（功率传输系数低于 0.1），在 710 Hz 时完全抑制了传输。值得注意的是，N-HR-ASVM 在该频率下的厚度仅为波长的 1/13。声压场和能量流模拟分析了造成低传输的机制。最后，通过实验测量了 N-HR-ASVM 的能量传输系数，发现其与模拟结果非常吻合。这项研究为螺旋通风超材料表面的研究提供了宝贵的见解。

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.