延长颈-亥姆霍兹共振器低频吸声体

doi:10.13438/j.cnki.jdzk.2025.01.007

吉首大学学报（自然科学版） ›› 2025, Vol. 46 ›› Issue (1): 45-50.DOI: 10.13438/j.cnki.jdzk.2025.01.007

延长颈-亥姆霍兹共振器低频吸声体

肖亚峰，喻宇驰，王甲豪，徐峰，沈丹蘅，刘耀光，林媛燕，孔鹏，邓科

(1.吉首大学物理与机电工程学院，湖南吉首 416000；2.广州汽车集团股份有限公司汽车工程研究院，广东广州 511434；3.中国科学院声学研究所噪声与振动重点实验室，北京 100190)

出版日期:2025-01-01 发布日期:2025-01-20
作者简介:肖亚峰（1999—），男，湖南长沙人，吉首大学物理与机电工程学院硕士研究生，主要从事声学超材料研究
基金资助:
国家自然科学基金资助项目（11964011）；2022年度湖南省大学生创新创业训练计划一般项目（3504）

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

XIAO Yafeng,YU Yuchi,WANG Jiahao,XU Feng,SHEN Danheng,LIU Yaoguang,LIN Yuanyan,KONG Peng,DENG Ke

(1.Department of Physics and Electromechanical Engineering,Jishou University,Jishou 416000,Hunan China;2.Automotive Engineering Research Institute,Guangzhou Automobile Group Co.,Ltd.,Guangzhou 510006,China;3.Key Laboratory of Noise and Vibration Research,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China)

Online:2025-01-01 Published:2025-01-20

摘要/Abstract

摘要：为了有效解决亥姆霍兹共振器低频吸声性能不佳的问题，将阵列式延长颈与亥姆霍兹共振结构有效结合，设计了一种高效且具有深亚波长厚度的吸声体.仿真测试结果表明，吸声体的厚度仅为吸收峰频率对应波长的1/36，展现出深亚波长的吸声特性；共振频率为315 Hz时，吸声体的吸收峰幅值高达0.985，几乎实现了对声能量的完美吸收；吸声体的吸声机理主要是声能量在多个延长颈内壁发生摩擦损耗；阵列式延长颈为吸声体的声阻抗提供了额外的可调性，工作频率和带宽可在较宽频带内灵活调谐；结构参数中，延长颈孔径和管长均显著影响吸声体的吸声性能.该吸声体结构简单、厚度较薄，低频吸声性能佳.

关键词： 亥姆霍兹共振器, 延长颈, 深亚波长, 声阻抗

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

肖亚峰, 喻宇驰, 王甲豪, 徐峰, 沈丹蘅, 刘耀光, 林媛燕, 孔鹏, 邓科. 延长颈-亥姆霍兹共振器低频吸声体[J]. 吉首大学学报（自然科学版）, 2025, 46(1): 45-50.

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.

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延长颈-亥姆霍兹共振器低频吸声体

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

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