多频磁力负刚度薄膜声学超材料特性仿真
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- 英文论文题名：Numerical study of membrane acoustic metamaterial with multiple magnetic negative stiffness cells
- 论文作者：赵俊娟 ; 王月月 ; 张斌
- 英文论文作者：ZHAO Jun-juan ; WANG Yue-yue ; ZHANG Bin ; Beijing Key Lab of Environmental Noise and Vibration ; Beijing Municipal Institute of Labor Protection
- 年：2016
- 作者机构：北京市劳动保护科学研究所;
- 论文关键词：声学超材料 ; 磁力负刚度 ; 多频吸声
- 英文论文关键词：membrane acoustic metamaterial ; magnetic negative stiffness ; multiple frequency sound absorption
- 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：TB383.2
- 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：3
- 文件大小：374k
- 原文格式：D
- 会议级别：全国
摘要
针对磁力负刚度薄膜吸声结构难以实现宽频吸声的问题,本文提出了多频磁力负刚度声学超材料结构设计,它是由磁力负刚度基础结构无线重复排列所形成无限大面积声学超材料,其中基础结构包括三个磁力负刚度薄膜吸声单元,通过各单元不同的磁场参数的设定,达到其具有不同刚度的要求,以实现超材料在低频范围内具备多频和宽频吸声特性的目的。根据超材料单元的阻抗并联特性,建立了多频磁力负刚度薄膜超材料的吸声理论模型,通过仿真分析得出,该声学超材料在具备低频吸声特性的基础上,具有明显的多频宽频吸声特性,且频率和带宽可调。
A membrane acoustic metamaterial with single magnetic negative stiffness cell usually can achieve a thin layer sound absorption for one absorption peak at low-frequency. In this paper a membrane acoustic metamaterial with multiple magnetic negative stiffness cells was designed to realize a compact design for low frequency sound absorption. This membrane acoustic metamaterial comprises three cells or more in which exists different magnetic negative stiffness. And the electro-acoustic analogy model of this absorber for three cells face the incident wave in parallel is present to calculate the total impedance and predict its absorption performance. The multiple frequencies sound absorber is capable of unity absorption at multiple frequencies and broad bandwidth, due to the regime of different magnetic negative stiffness. This has been well demonstrated by equivalent circuit simulation results in this paper.
A membrane acoustic metamaterial with single magnetic negative stiffness cell usually can achieve a thin layer sound absorption for one absorption peak at low-frequency. In this paper a membrane acoustic metamaterial with multiple magnetic negative stiffness cells was designed to realize a compact design for low frequency sound absorption. This membrane acoustic metamaterial comprises three cells or more in which exists different magnetic negative stiffness. And the electro-acoustic analogy model of this absorber for three cells face the incident wave in parallel is present to calculate the total impedance and predict its absorption performance. The multiple frequencies sound absorber is capable of unity absorption at multiple frequencies and broad bandwidth, due to the regime of different magnetic negative stiffness. This has been well demonstrated by equivalent circuit simulation results in this paper.
引文
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[2]Tao,J.;Jing,R.and Qiu,X.Sound absorption of a finite micro-perforated panel backed by a shunted loudspeaker[J],Journal of the Acoustical Society of America,135(1),2014,231-238.
[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]Koga,S.Improvement of sound absorption of thin film studies of absorption characteristics by equivalent circuit[J],Journal of the Acoustical Society of Japan,52,1996,92-98.
[5]Fuchs,H.V.Alternative fibregless absorbers-new tools and materials for noise control and acoustic comfort[J],Acta Acustica United with Acustica,87(3),2001,414-422.
[6]Sakagami,K.;Morimoto,M.and Takahashi,D.A note on the acoustic reflection of an infinite membrane[J],Acta Acustica United with Acustica,80(6),1994,569-572.
[7]Takahashi,D.;Sakagami,K.and Morimoto,M.Acoustic properties of permeable membranes[J],Journal of the Acoustical Society of America,99(5),1996,3003-3009.
[8]Sakagami,K.;Kiyama,M.;Morimoto,M.and Takahashi,D.Detailed analysis of the acoustic properties of a permeable membrane[J],Applied Acoustics,54(2),1998,93-111.
[9]Yang,Z.;Dai,H.;Chan,N.;Ma,G.;and Shen,P.Acoustic metamaterial panels for sound attenuation in the 50-1000Hz regime[J].Applied Physics Letters,2010,96:0419061-3.
[10]Mei,J.;Ma,G.Dark acoustic metamaterials as super absorbers for low-frequency sound[J].Nature Communications,2012,3(27):7561-7567.
[11]Ma,G.;Yang,M.;Xiao,S.;Yang,Z.and Sheng,P.Acoustic metasurface with hybrid resonances[J],Nature materials,13(9),2014,873-878.
[12]Zhang,Y.M.;Chan,Y.J.and Huang,L.Thin broadband noise absorption through acoustic reactance control by electro-mechanical coupling without sensor[J],Journal of the Acoustical Society of America,135(5),2014,2738-45.
[13]Zhao,J.;Li,X.;Zhang,B.;Gai,X.and Wang,Y.Modelling and simulation of membrane sound absorbers with magnetic negtive stiffness[C].Internoise2015,San Francisco,California,USA,9-12august,2015.