嵌入管式亥姆霍兹共振器的幅频调控及设计应用  

Amplitude and Frequency Regulation Mechanism and Design Application via Helmholtz Resonator with Embedded Pipes

作　　者：李炜融 周国建 李秋彤 刘艳 谢文韬 熊亚军 LI Weirong;ZHOU Guojian;LI Qiutong;LIU Yan;XIE Wentao;XIONG Yajun(Acoustic Metamaterials Laboratory,Shanghai Research Institute of Materials,Shanghai 200437,China;Shanghai Engineering Research Center of Earthquake Resistant Energy Dissipation,Shanghai Research Institute of Materials,Shanghai 200437,China)

机构地区：[1]上海材料研究所声学超构材料实验室,上海200437 [2]上海材料研究所上海消能减震工程技术研究中心,上海200437

出　　处：《噪声与振动控制》2023年第6期62-68,共7页Noise and Vibration Control

基　　金：上海市浦江人才计划资助项目(20PJ1417300);上海张江国家自主创新示范区专项发展资金资助项目(ZJ2021-ZD-006)。

摘　　要：嵌入管式亥姆霍兹共振器的管体位于共振腔内部,可压缩亥姆霍兹共振器结构体的厚度,利于轻薄化应用。为探究嵌入管式亥姆霍兹共振器的幅频调控机制,利用传统亥姆霍兹共振器的吸声原理,推演其吸声理论模型,并确定其阻抗匹配结构设计计算公式;随后制备并测量不同结构参数的单胞样件,通过分析结构参数对共振频率及共振幅值的影响,揭示其结构参数的幅频调控机制;最后结合多单元耦合特性,设计嵌入管式共振器多腔耦合吸声单元。结果表明,在频率396 Hz~501 Hz范围内,该吸声单元平均吸声系数大于0.95。对结构参数调控机制的研究成果可用于指导嵌入管式亥姆霍兹共振器结构设计,以进一步提高优化设计效率。The pipe of the Helmholtz resonator embedded in the resonant cavity can compress the thickness of the structure and is conducive to lightweight application.In order to explore the resonance amplitude and frequency regulation mechanism of the Helmholtz resonator with embedded pipe,the theoretical model of the resonator was deduced by using the sound absorption principle of the traditional Helmholtz resonator,and the design formula of the structure based on the parametric coupling relationship was determined.Then,the single cell samples with different structural parameters were prepared and tested.By analyzing the influence of structural parameters on resonance frequency and amplitude,the amplitude-frequency controlling mechanism was revealed.Finally,combined with the coupling characteristics of multiple units,a multi-cavity coupling sound absorbing unit embedded with pipe was designed.The result shows that in the range of 396 Hz-501 Hz,the average sound absorption coefficient is greater than 0.95.The controlling mechanism of structural parameters can be used to guide the structural design of Helmholtz resonator with embedded pipe and to further improve the efficiency of optimal design.

关 键 词：声学 亥姆霍兹共振器 嵌入管 低频吸声 调控机制 

分 类 号：TB535[理学—物理]