L型分割背腔的微穿孔板吸声结构的吸声性能研究
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摘要
为了提高单层微穿孔板吸声结构的低频吸声性能,设计了一种L型分割背腔的微穿孔板吸声结构。基于微穿孔板吸声理论和声电等效电路原理,建立了两腔分割的L型分割背腔的微穿孔板吸声结构的声电等效电路模型。数值和实验结果表明:L型分割背腔的微穿孔板吸声结构能很好的改善单层微穿孔板结构低频吸声性能,并且明显拓宽了单层微穿孔板结构的吸声带宽。将此结构推广到N腔分割,实验结果和数值结果拟合的较好。
To improve the sound absorption ability of a single-layer microperforated panel( MPP),an MPP backed by an L-type division cavity was designed. Based on the MPP theory and electro-acoustical equivalent circuit principle,the sound absorption model of a microperforated panel backed by a two-cavity L-type division cavity was built. Simulation and experiment results show that that an MPP with a designed cavity structure has better sound absorption performance and a broader absorption bandwidth than an MPP with a single-cavity structure. This structure is extended to N-cavity segmentation. The experimental results are in agreement with the numerical results.
To improve the sound absorption ability of a single-layer microperforated panel( MPP),an MPP backed by an L-type division cavity was designed. Based on the MPP theory and electro-acoustical equivalent circuit principle,the sound absorption model of a microperforated panel backed by a two-cavity L-type division cavity was built. Simulation and experiment results show that that an MPP with a designed cavity structure has better sound absorption performance and a broader absorption bandwidth than an MPP with a single-cavity structure. This structure is extended to N-cavity segmentation. The experimental results are in agreement with the numerical results.
引文
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[18]GAI X L,XING T,LI X H,et al.Sound absorption of microperforated panel mounted with Helmholtz resonators[J].Applied Acoustics,2016,114:260-265.
[2]马大猷.微穿孔板吸声结构的理论和设计[J].中国科学,1975(1):38-50.MA Dayou.Theory and design of microperforated panel constructions[J].Science in China,1975(1):38-50.
[3]MA Dayou.Potential of microperforated panel absorber[J].Journal of the Acoustical Society of America,1998,104(5):2861-2866.
[4]DUPNT T,PAVIC G,LAULAGNET B,Acoustic properties of lightweight micro-perforated plate system[J].Acta Acustical Acustica,2003,89:201-212.
[5]马大猷,微穿孔板吸声体的准确理论和设计[J].声学学报,1997,22(5)386-393.MA Dayou.General theory and design of microperforated panel absorbers[J].Actc Acustica,1997,22(5):386-393.
[6]马大猷,组合微穿孔板吸声结构[J].噪声与振动控制,1990(3):3-9.MA Dayou,The combine microperforated panel sound absorbing construction[J].Noise and Vibration Control,1990(3):3-9.
[7]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,1999,18(2):61-65.MAO Dongxing,WANG Zuomin.Absorbing property of multilayer microperforated structure in diffuse field[J].Technical Acoustics,1999,18(2):61-65.
[8]SAKAGAMI K,MORIMOTO M,KOIKE W.A numerical study of double-leaf microperforated panel absorbers[J].Apllied Acoustics,2006,67:609-619.
[9]张晓杰,赵晓丹.多层微穿孔板的优化设计[J].电声技术,2008,32(2):70-74.ZHANG Xiaojie,ZHAO Xiaodan.Multilayer micro perforated panel optimization design[J].Audio Engineering,2008,32(2):70-74.
[10]卢伟健,张斌,李孝宽.变截面微穿孔板吸声特性研究[J].噪声与振动控制,2009(2):147-150.LU Weijian,ZHANG Bin,LI Xiaokuan.Study on acoustic characteristic of micro-perforated panel with variable cross section[J].Noise and Vibration Control,2009(2):147-150.
[11]RANDEBERG R T.Perforated panel a bsorbers with viscous energy dissipation enhanced by orifice design[D].Norwegian University of Science and Technology,2009.
[12]何立燕,扈西枝,陈挺.孔截面变化对厚微穿孔板吸声性能的影响[J].噪声与振动控制,2011(1):141-144.HE Liyan,HU Xizhi,CHEN Ting.The influence of variable section of orifice on sound absorption characteristics of thick microperforated panel[J].Noise and Vibration Control,2011(1):141-144.
[13]QIAN Y J,KONG D Y,LIU S M,et al.Investigation on micro-perforated panel absorber with ultra-micro perforations[J].Apllied Acoustics,2013,74:931-935.
[14]吕亚东,魏文.管束式穿孔板共振吸声结构[P].中国专利:00100641.X,2000.
[15]李唐.不等腔微穿孔板组合吸声结构的吸声特性初探[D].太原:太原理工大学,2008:65-66.
[16]TAO J C,JING R X,QIU X J.Sound absorption of a finite micro-perforated panel backed by a shunted loundspeaker[J].Journal of Acoustical society of America,2014,135(1):231-238.
[17]GAI X L,LI X H,ZHANG B,et al.Experimental study on sound absorption performance of microperforated panel with membrane cell[J].Applied Acoustics,2016,110:241-247.
[18]GAI X L,XING T,LI X H,et al.Sound absorption of microperforated panel mounted with Helmholtz resonators[J].Applied Acoustics,2016,114:260-265.