Low Frequency Wideband Sound Absorber Based on Extended-Neck Helmholtz Resonance

doi:10.13438/j.cnki.jdzk.2025.01.007

Abstract

Abstract: In order to solve the problem of low frequency sound absorption of Helmholtz resonator,an efficient wideband sound absorber with deep subwavelength thickness was designed by combining arrayed extended neck with Helmholtz resonance structure.The results show that the thickness of the absorber is only 1/36 of the wavelength corresponding to the absorption peak frequency,showing the sound absorption characteristics of deep subwavelength.When the resonant frequency is 315 Hz,the absorption peak amplitude of the sound absorber is as high as 0.985,which almost realizes the perfect absorption of sound energy.The sound absorption mechanism of the sound absorber is mainly due to the friction loss of sound energy in the inner wall of multiple extended necks.The arrayed extended neck provides additional tunability for the acoustic impedance of the absorber,and the operating frequency and bandwidth can be flexibly tuned in a wide band.Among the structural parameters,both the extended neck aperture and the extended neck tube length significantly affect the sound absorption performance of the sound absorber.The sound absorber has simple structure,thin thickness and good low frequency sound absorption performance.

Key words: helmholtz resonanor, extended neck, deep sub-wavelength, acoustic impedance

XIAO Yafeng, YU Yuchi, WANG Jiahao, XU Feng, SHEN Danheng, LIU Yaoguang, LIN Yuanyan, KONG Peng, DENG Ke. Low Frequency Wideband Sound Absorber Based on Extended-Neck Helmholtz Resonance[J]. Journal of Jishou University(Natural Sciences Edition), 2025, 46(1): 45-50.

References

[1] GUO Jingwen,ZHANG Xin,FANG Yin,et al.An Extremely-Thin Acoustic Metasurface for Low-Frequency Sound Attenuation with a Tunable Absorption Bandwidth[J].International Journal of Mechanical Sciences,2022,213:106872.DOI:10.1016/j.ijmecsci.2021.106872.
[2] SHAO Hanbo,HE Jincheng,ZHU Jiang,et al.Low-Frequency Sound Absorption of a Tunable Multilayer Composite Structure[J].Journal of Vibration,2022,28(18):2279-2287.
[3] ZHU Jun,GAO Hao,DAI Shoubo,et al.Multilayer Structures for High-Intensity Sound Energy Absorption in Low-Frequency Range[J].International Journal of Mechanical Sciences,2023,247:108197.DOI:10.1016/j.ijmecsci.2023.108197.
[4] REN Zhiwen,CHENG Yuehang,CHEN Mingji,et al.A Compact Multifunctional Metastructure for Low-Frequency Broadband Sound Absorption and Crash Energy Dissipation[J].Materials Design,2022,215:110462.DOI:10.1016/j.matdes.2022.110462.
[5] CHAMPOUX YVAN,ALLARD JEAN-F.Dynamic Tortuosity and Bulk Modulus in Air-Saturated Porous Media[J].Journal of Applied Physics,1991,70(4):1975-1979.DOI:10.1063/1.349482.
[6] YANG Min,SHENG Ping.Sound Absorption Structures:From Porous Media to Acoustic Metamaterials[J].Annual Review of Materials Research,2017,47:83-114.
[7] LANGFELDT F,KHATOKAR A J,GLEINE W.Plate-Type Acoustic Metamaterials with Integrated Helmholtz Resonators[J].Applied Acoustics,2022,199:109019.DOI:10.1016/j.apacoust.2022.109019.
[8] XING Tuo,GAI Xiaoling,ZHAO Junjuan,et al.Low Frequency Sound Absorption of Adjustable Membrane-Type Acoustic Metamaterials[J].Applied Acoustics,2022,188:108586.DOI:10.1016/j.apacoust.2021.108586.
[9] YANG Xiaocui,YANG Fei,SHEN Xinmin,et al.Development of Adjustable Parallel Helmholtz Acoustic Metamaterial for Broad Low-Frequency Sound Absorption Band[J].Materials,2022,15(17):5938.DOI:10.3390/ma15175938.
[10] LI Xinwei,YU Xiang,CHUA Junwei,et al.Harnessing Cavity Dissipation for Enhanced Sound Absorption in Helmholtz Resonance Metamaterials[J].Materials Horizons,2023,10(8):2892-2903.
[11] MENG Deshi,LI Lijun,WU Zhenhua.Helmholtz Resonator-Based Acoustic Metamaterials Enabling Broadband Asymmetric Sound Absorption and Ventilation[J].Vibration Active Control,2023,42(3):1242-1250.
[12] ZHANG Weitao,XIN Fengxian.Broadband Low-Frequency Sound Absorption via Helmholtz Resonators with Porous Material Lining[J].Journal of Sound Vibration,2024,578:118330.DOI:10.1016/j.jsv.2024.118330.
[13] CAI Xiaobing,GUO Qiuquan,HU Gengkai,et al.Ultrathin Low-Frequency Sound Absorbing Panels Based on Coplanar Spiral Tubes or Coplanar Helmholtz Resonators[J].Applied Physics Letters,2014,105:121901.DOI:10.1063/1.4895617.
[14] LIU Liu,CHANG Huiting,ZHANG Chi,et al.Single-Channel Labyrinthine Metasurfaces as Perfect Sound Absorbers with Tunable Bandwidth[J].Applied Physics Letters,2017,111:083503.DOI:10.1063/1.4986142.
[15] SHEN Yuchen,YANG Yanye,GUO Xiaosheng,et al.Low-Frequency Anechoic Metasurface Based on Coiled Channel of Gradient Cross-Section[J].Applied Physics Letters,2019,114:083501.DOI:10.1063/1.5081926.
[16] AUR'EGAN YVES.Ultra-Thin Low Frequency Perfect Sound Absorber with High Ratio of Active Area[J].Applied Physics Letters,2018,113:201904.DOI:10.1063/1.5063504.
[17] FU Caixing,ZHANG Xiaonan,YANG Min,et al.Hybrid Membrane Resonators for Multiple Frequency Asymmetric Absorption and Reflection in Large Waveguide[J].Applied Physics Letters,2016,110:021901.DOI:10.1063/1.4973821.
[18] MA Guancong,YANG Min,XIAO Songwen,et al.Acoustic Metasurface with Hybrid Resonances[J].Nature Materials,2014,13:873-878.DOI:10.1038/nmat3994.
[19] LI Yong,ASSOUAR BADREDDINE M.Acoustic Metasurface-Based Perfect Absorber with Deep Subwavelength Thickness[J].Applied Physics Letters,2016,108:063502.DOI:10.1063/1.4941338.
[20] ZHANG Chi,HU Xinhua.Three-Dimensional Single-Port Labyrinthine Acoustic Metamaterial:Perfect Absorption with Large Bandwidth and Tunability[J].Physical Review Applied,2016,6:064025.DOI:10.1103/PhysRevApplied.6.064025.
[21] STINSON MICHAEL R,SHAW EDGAR A G.Acoustic Impedance of Small,Circular Orifices in Thin Plates[J].Journal of the Acoustical Society of America,1985,77:2039-2042.DOI:10.1121/1.391776.
[22] HUANG Sibo,ZHOU Zhiling,LI Dongting,et al.Compact Broadband Acoustic Sink with Coherently Coupled Weak Resonances[J].Science Bulletin,2020,65(5):373-379.DOI:10.1016/j.scib.2019.11.008.
[23] STINSON MICHAEL R.The Propagation of Plane Sound Waves in Narrow and Wide Circular Tubes,and Generalization to Uniform Tubes of Arbitrary Cross-Sectional Shape[J].Journal of the Acoustical Society of America,1991,89:550-558.