Interlayer Parallel Connection of Multiple Helmholtz Resonators for Optional Broadband Low Frequency Sound Absorption.

IF 3.1 3区材料科学 Q3 CHEMISTRY, PHYSICAL

Materials Pub Date : 2025-02-04 DOI:10.3390/ma18030682

Xiaocui Yang, Qiang Li, Xinmin Shen, Binbin Zhou, Ning Wang, Enshuai Wang, Xiaonan Zhang, Cheng Shen, Hantian Wang, Shunjie Jiang

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引用次数: 0

Abstract

The Helmholtz resonance acoustic metamaterial is an effective sound absorber in the field of noise reduction, especially in the low-frequency domain. To overcome the conflict between the number of Helmholtz resonators and the volume of the rear cavity for each chamber with a given front area of single-layer metamaterial, a novel acoustic metamaterial of interlayer parallel connection of multiple Helmholtz resonators (IPC-MHR) is proposed in this study. The developed IPC-MHR consists of several layers, and the Helmholtz resonators among different layers are connected in parallel. The sound absorption property of IPC-MHR is studied by finite element simulation and further optimized by particle swarm optimization algorithm, and it is validated by standing wave tube measurement with the sample fabricated by additive manufacturing. The average sound absorption coefficient in the discrete frequency band [200 Hz, 300 Hz] U [400 Hz, 600 Hz] U [800 Hz, 1250 Hz] is 0.7769 for the IPC-MHR with four layers. Through the optimization of the thickness of each layer, the average sound absorption coefficient in 250-750 Hz is up to 0.8068. Similarly, the optimized IPC-MHR with six layers obtains an average sound absorption coefficient of 0.8454 in 300-950 Hz, which exhibits an excellent sound absorption performance in the low-frequency range with a wide band. The IPC-MHR can be used to suppress obnoxious noise in practical applications.

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来源期刊

Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

5.80

自引率

14.70%

发文量

7753

审稿时长

1.2 months

期刊介绍： Materials (ISSN 1996-1944) is an open access journal of related scientific research and technology development. It publishes reviews, regular research papers (articles) and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Materials provides a forum for publishing papers which advance the in-depth understanding of the relationship between the structure, the properties or the functions of all kinds of materials. Chemical syntheses, chemical structures and mechanical, chemical, electronic, magnetic and optical properties and various applications will be considered.