非完全隔离型微穿孔空腔结构声学性能研究
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- 英文论文题名：Acoustic performance of micro-perforated panel absorbers with incompletely partitioned cavities
- 论文作者：黄思博 ; 王旭 ; 毛东兴
- 英文论文作者：HUANG Si-bo ; WANG Xu ; MAO Dong-xing ; Institute of Acoustic ; Tongji University
- 年：2016
- 作者机构：同济大学声学研究所;
- 论文关键词：微穿孔板 ; 非完全隔离型空腔 ; 吸声性能
- 英文论文关键词：MPPs ; incompletely partitioned cavities ; sound absorption mechanism
- 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：TB53
- 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：717k
- 原文格式：D
- 会议级别：全国
摘要
实验中发现了在微穿板后插入小于空腔深度的侧隔板铝板,使其背后空腔不完全隔离,会影响微穿孔结构在扩散场中的吸声性能。合理配置侧隔板的插入长度周期以及侧隔板插入的深度,可以使该微穿孔结构的吸声性能得到有效的提升。文中对这种非完全隔离型微穿孔空腔结构在扩散场中的吸声原理进行了研究,探明了其吸声性能与侧隔板插入长度周期以及侧隔板插入深度的关系,建立了对这种吸声结构的吸声性能理论计算模型,并与实验结果进行对比。
In the experiments we found that when inserting short aluminum separators behind the MPP to partition the cavities incompletely, it will affect the sound absorption performance in diffuse field. If the insertion period length and the insertion depth of the separators are well arranged, a great improvement of sound absorption properties will be achieved. In this paper, the acoustic performance of MPPs with incompletely partitioned cavities is analyzed, and the relationship between sound absorption properties and the insertion period length and depth is found. A theoretical model of such structures is proposed, which agrees well with the experimental results.
In the experiments we found that when inserting short aluminum separators behind the MPP to partition the cavities incompletely, it will affect the sound absorption performance in diffuse field. If the insertion period length and the insertion depth of the separators are well arranged, a great improvement of sound absorption properties will be achieved. In this paper, the acoustic performance of MPPs with incompletely partitioned cavities is analyzed, and the relationship between sound absorption properties and the insertion period length and depth is found. A theoretical model of such structures is proposed, which agrees well with the experimental results.
引文
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[3]Zhao X,Fan X.Enhancing low frequency sound absorption of micro-perforated panel absorbers by using mechanical impedance plates[J].Applied Acoustics,2015,88:123-128.
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[6]Wang C,Huang L.On the acoustic properties of parallel arrangement of multiple micro-perforated panel absorbers with different cavity depths[J].The Journal of the Acoustical Society of America,2011,130(1):208-218.
[7]Liu J,Herrin D W.Enhancing micro-perforated panel attenuation by partitioning the adjoining cavity[J].Applied Acoustics,2010,71(2):120-127.
[8]毛东兴,王佐民.双层微穿孔结构扩散场吸声特性[J].声学技术,1999(2):61-65.
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[2]盛胜我,赵松龄.加膜穿孔板声学特性的研究[J].声学学报,1994,19(1):45-52.
[3]Zhao X,Fan X.Enhancing low frequency sound absorption of micro-perforated panel absorbers by using mechanical impedance plates[J].Applied Acoustics,2015,88:123-128.
[4]Wu T,Cox T J,Lam Y W.A profiled structure with improved low frequency absorption[J].The Journal of the Acoustical Society of America,2001,110(6):3064-3070.
[5]Takahashi D.Excess sound absorption due to periodically arranged absorptive materials[J].The Journal of the Acoustical Society of America,1989,86(6):2215-2222.
[6]Wang C,Huang L.On the acoustic properties of parallel arrangement of multiple micro-perforated panel absorbers with different cavity depths[J].The Journal of the Acoustical Society of America,2011,130(1):208-218.
[7]Liu J,Herrin D W.Enhancing micro-perforated panel attenuation by partitioning the adjoining cavity[J].Applied Acoustics,2010,71(2):120-127.
[8]毛东兴,王佐民.双层微穿孔结构扩散场吸声特性[J].声学技术,1999(2):61-65.
[9]马大猷.微穿孔板吸声结构的理论和设计[J].中国科学,1975,18(1):38-5