Acoustic properties analysis of ABH complex structures with micro-perforated boundaries

IF 3.4 2区物理与天体物理 Q1 ACOUSTICS

Applied Acoustics Pub Date : 2025-04-30 DOI:10.1016/j.apacoust.2025.110752

Hanya Zhu , Xiao Liang , Nansha Gao , Liang Shi

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Abstract

In this paper, a composite structure with a micro-perforated boundary acoustic black hole is designed to control low-frequency band and wide-band noise. Firstly, the finite element and transfer matrix theoretical models for calculating the sound absorption coefficient of this system are respectively established and compared to verify. In addition, the acoustic properties inside the composite structure and the acoustic black hole effect of the composite structure were investigated at different frequencies. Secondly, this paper investigates the effects of the different parameters of composite structures on their sound absorption performance. Furthermore, the parameters of the composite structure are optimized using the Nelder-Mead simplex method. After optimization, the sound absorption coefficient of the composite structure is consistently above 0.9 from 325 Hz (735 Hz before optimization). Finally, the experimental results validate the accuracy of the finite element and transfer matrix methods. The optimized composite structure with microperforated boundary acoustic black holes has excellent sound absorption performance, which provides a new solution for efficient low-frequency broadband noise control in small-volume structures.

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具有微孔边界的ABH复合结构声学特性分析

本文设计了一种具有微穿孔边界声黑洞的复合结构，以控制低频和宽带噪声。首先，分别建立了计算该系统吸声系数的有限元和传递矩阵理论模型，并进行了对比验证。此外，还研究了不同频率下复合材料结构内部的声学特性以及复合材料结构的声黑洞效应。其次，研究了不同结构参数对复合材料吸声性能的影响。此外，采用Nelder-Mead单纯形法对复合材料结构参数进行了优化。优化后复合材料结构的吸声系数从325 Hz（优化前735 Hz）一直保持在0.9以上。最后，实验结果验证了有限元法和传递矩阵法的准确性。优化后的微孔边界声黑洞复合结构吸声性能优异，为小体积结构中低频宽带噪声的高效控制提供了新的解决方案。

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.