镶嵌亥姆霍兹共振器的微穿孔板吸声体的声学性能研究

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• 英文论文题名：Sound absorption of microperforated panel mounted with Helmholtz resonators
• 论文作者：盖晓玲 ; 李贤徽 ; 邢拓 ; 张斌
• 英文论文作者：GAI Xiao-ling ; LI Xian-hui ; XING Tuo ; ZHANG Bin ; Key Laboratory of Fundamental Science for National Defense-Advanced Design Technology of Flight vehicle ; Nanjing University of Aeronautics & Astronautics
• 年：2016
• 作者机构：环境噪声与振动北京市重点实验室北京市劳动保护科学研究所;
• 论文关键词：微穿孔板 ; 亥姆霍兹 ; 吸声系数 ; 共振频率 ; 低频宽带吸声结构
• 英文论文关键词：Microperforated panel ; Helmholtz resonators ; Absorption coefficient ; Resonance frequency ; Low frequency broadband sound absorption structure
• 会议召开时间：2016-10-28
• 会议录名称：2016年全国声学学术会议论文集
• 语种：中文
• 分类号：TB535
• 学会代码：OGSM
• 会议名称：2016年全国声学学术会议
• 会议地点：中国湖北武汉
• 主办单位：中国声学学会
• 学会名称：中国声学学会
• 页数：4
• 文件大小：393k
• 原文格式：D
• 会议级别：全国

摘要

为了提高单层微穿孔板吸声结构的低频吸声性能,对镶嵌亥姆霍兹共振器的微穿孔板吸声体的声学性能进行了研究。基于微穿孔板吸声理论和亥姆霍兹共振吸声理论,建立了镶嵌亥姆霍兹共振器的微穿孔板吸声体吸声的声电等效电路模型。对镶嵌亥姆霍兹共振器的微穿孔板吸声体的吸声性能进行研究,数值模拟结果表明:镶嵌亥姆霍兹共振器的微穿孔板吸声体有两个吸声峰,低频吸声峰值由亥姆霍兹共振器决定,高频共振峰与微穿孔板相关。合理的选择微穿孔板及亥姆霍兹共振器的结构参数,可以达到低频宽带的吸声效果。
In order to improve the sound absorption ability of the single-layer microperforated panel(MPP), MPP mounted with Helmholtz resonators(MPPHR) is introduced. Based on the MPP, Helmholtz resonators theory and electro-acoustical equivalent circuit principle, sound absorption properties of MPPHR are studied. Simulation results show that MPPHR have two peak frequencies and one anti-resonant frequency. The low-frequency peak is dependent on the Helmholtz resonators, while the high frequency peak is close to the peak of the single-layer MPP. Reasonable selection of structure parameters of MPP and Helmholtz resonator, low frequency broadband sound absorption structure will be formed.

引文

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