舷间液舱模型声振耦合特性及声辐射控制
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摘要
水下航行体内部设备产生的振动能量通过舷间液舱侧板和舱内水介质两个途径的耦合和传递,在外场产生辐射噪声,成为机械噪声控制的一个短板。文中以舷间液舱外场声辐射控制为背景,采用解析方法建立了液舱结构振动与内外声场的声振耦合模型,计算分析了液舱侧板及液舱内部介质对振动传递和外场声辐射的影响,结果认为敷设声学覆盖层并减小液舱侧板材料刚度能够有效控制外场辐射声功率。文章为舷间液舱的"声短路"控制提供了新的思路。
The vibration energy generated by the internal equipment of the underwater vehicle is coupled and transmitted by side panel and internal medium of the water cabin, and generates radiation noise in the external field, which becomes a weakness of ship mechanical noise control. In this paper, an analytical coupled model of sound and structre vibration is established for the challenge of water cabin external acoustic radiation control. Both the internal and external sound field influence is considered. The vibration and acoustic power transmitted by side panel and internal medium is calculated, the influence of both transmitt paths is given. An effective reduction of external acoustic radiation can be achieved by lining acoustic coating and reducing the stiffness of side panel, providing a new idea for the control of acoustic power transmitting through water cabin.
The vibration energy generated by the internal equipment of the underwater vehicle is coupled and transmitted by side panel and internal medium of the water cabin, and generates radiation noise in the external field, which becomes a weakness of ship mechanical noise control. In this paper, an analytical coupled model of sound and structre vibration is established for the challenge of water cabin external acoustic radiation control. Both the internal and external sound field influence is considered. The vibration and acoustic power transmitted by side panel and internal medium is calculated, the influence of both transmitt paths is given. An effective reduction of external acoustic radiation can be achieved by lining acoustic coating and reducing the stiffness of side panel, providing a new idea for the control of acoustic power transmitting through water cabin.
引文
[1]白振国.双层圆柱壳舷间声振耦合特性及控制技术[D].北京:中国舰船研究院,2014.Bai Zhenguo.Vibration and sound coupling behavior and control method of double-layer cylindrical shells[D].Beijing:China Ship Research&Development Academy,2014.(in Chinese)
[2]London A.Transmission of reverberant sound through double wall[J].Journal Acoustic Society of America,1950,22:270-279.
[3]Antonio J M P,Tadeu A,Godinho L.Analytical evaluation of the acoustic insulation provided by double infinite walls[J].Journal of Sound and Vibration,2003,263:113-129.
[4]Moez A,Hammami L,Mohamed H.Comportement vibro-acoustique d’un systèmeàdouble parois[J].Revue de Mécanique Appliquée et Théorique,2004(6):373-390.
[5]Bao C,Pan J.Active acoustic control of noise transmission through double walls:Effect of mechanical paths[J].Journal of Sound and Vibration,1998,215:395-398.
[6]Cheng L,Li Y Y,Gao J X.Energy transmission in a mechanically-linked double-wall structure coupled to an acoustic enclosure[J].Journal Acoustic Society of America,2005,117(5):2742-2751.
[7]陈美霞,陈小宁,沈瑞喜.复杂双层壳体声辐射性能分析[J].声学学报(中文版),2004,29(3):209-215.Chen Meixia,Chen Xiaoning,Shen Ruixi.Analysis of sound radiation characteristics of complex double shells[J].Acta Acoustica,2004,29(3):209-215.
[8]Hongisto V,Lindgren M,Helenius R.Sound insulation of double walls-An experimental parametric study[J].Acta A-custica United with Acustica,2002,88:904-923.
[9]Davy J L.Sound transmission of cavity walls due to structure borne transmission via point and line connections[J].Journal Acoustic Society of America,2012,132(2):814-821.
[10]Legault J,Atalla N.Numerical and experimental investigation of the effect of structural links on the sound transmission of a lightweight double panel structure[J].Journal of Sound and Vibration,2009,324:712-732.
[11]Legault J,Atalla N.Vibro-acoustic response of orthogonally stiffened panels:The effects of finite dimensions[J].Journal of Sound and Vibration,2011,330:5928-5948.
[12]宁少武,史治宇.夹层机构声振耦合分析方法[J].振动与冲击,2016,35(17):151-159.Ning Shaowu,Shi Zhiyu.Vibro-acoustic coupled analysis method for sandwich structures[J].Journal of Vibration and Shock,2016,35(17):151-159.
[13]宁少武,史治宇.夹层结构中夹层声场的处理方法研究[J].振动与冲击,2016,35(23):160-167.Ning Shaowu,Shi Zhiyu.A treatment method for a sound field of sandwich structures[J].Journal of Vibration and Shock,2016,35(23):160-167.
[14]张浩,刘碧龙,苏正涛.双层结构敷设声学覆盖层的吸声特性研究[J].振动与冲击,2015,34(23):31-36.Zhang Hao,Liu Bilong,Su Zhengtao.Sound absorption features of double-layered structures coated with acoustic absorption layers[J].Journal of Vibration and Shock,2015,34(23):31-36.
[15]Ghosh S,Bhattacharya P.Energy transmission through a double-wall curved stiffened panel using Green’s theorem[J].Journal of Sound and Vibration,2015,342:218-240.
[16]Leissa A.Vibration of plates[M].Ohio State University,Columbus,1969.
[17]俞孟萨,白振国,吕世金.随机激励的非规则声腔自噪声计算方法[J].船舶力学,2015,19(8):1001-1010.Yu Mengsa,Bai Zhenguo,Lu Shijin.Calculation of self noise in an irregular acoustic cavity under random surface excitation[J].Journal of Ship Mechanics,2015,19(8):1001-1010.
[18]Davies H G.Acoustic radiation from loaded rectangular plates[R].Boston,Us.MIT Report No.71476-1,1969.
[2]London A.Transmission of reverberant sound through double wall[J].Journal Acoustic Society of America,1950,22:270-279.
[3]Antonio J M P,Tadeu A,Godinho L.Analytical evaluation of the acoustic insulation provided by double infinite walls[J].Journal of Sound and Vibration,2003,263:113-129.
[4]Moez A,Hammami L,Mohamed H.Comportement vibro-acoustique d’un systèmeàdouble parois[J].Revue de Mécanique Appliquée et Théorique,2004(6):373-390.
[5]Bao C,Pan J.Active acoustic control of noise transmission through double walls:Effect of mechanical paths[J].Journal of Sound and Vibration,1998,215:395-398.
[6]Cheng L,Li Y Y,Gao J X.Energy transmission in a mechanically-linked double-wall structure coupled to an acoustic enclosure[J].Journal Acoustic Society of America,2005,117(5):2742-2751.
[7]陈美霞,陈小宁,沈瑞喜.复杂双层壳体声辐射性能分析[J].声学学报(中文版),2004,29(3):209-215.Chen Meixia,Chen Xiaoning,Shen Ruixi.Analysis of sound radiation characteristics of complex double shells[J].Acta Acoustica,2004,29(3):209-215.
[8]Hongisto V,Lindgren M,Helenius R.Sound insulation of double walls-An experimental parametric study[J].Acta A-custica United with Acustica,2002,88:904-923.
[9]Davy J L.Sound transmission of cavity walls due to structure borne transmission via point and line connections[J].Journal Acoustic Society of America,2012,132(2):814-821.
[10]Legault J,Atalla N.Numerical and experimental investigation of the effect of structural links on the sound transmission of a lightweight double panel structure[J].Journal of Sound and Vibration,2009,324:712-732.
[11]Legault J,Atalla N.Vibro-acoustic response of orthogonally stiffened panels:The effects of finite dimensions[J].Journal of Sound and Vibration,2011,330:5928-5948.
[12]宁少武,史治宇.夹层机构声振耦合分析方法[J].振动与冲击,2016,35(17):151-159.Ning Shaowu,Shi Zhiyu.Vibro-acoustic coupled analysis method for sandwich structures[J].Journal of Vibration and Shock,2016,35(17):151-159.
[13]宁少武,史治宇.夹层结构中夹层声场的处理方法研究[J].振动与冲击,2016,35(23):160-167.Ning Shaowu,Shi Zhiyu.A treatment method for a sound field of sandwich structures[J].Journal of Vibration and Shock,2016,35(23):160-167.
[14]张浩,刘碧龙,苏正涛.双层结构敷设声学覆盖层的吸声特性研究[J].振动与冲击,2015,34(23):31-36.Zhang Hao,Liu Bilong,Su Zhengtao.Sound absorption features of double-layered structures coated with acoustic absorption layers[J].Journal of Vibration and Shock,2015,34(23):31-36.
[15]Ghosh S,Bhattacharya P.Energy transmission through a double-wall curved stiffened panel using Green’s theorem[J].Journal of Sound and Vibration,2015,342:218-240.
[16]Leissa A.Vibration of plates[M].Ohio State University,Columbus,1969.
[17]俞孟萨,白振国,吕世金.随机激励的非规则声腔自噪声计算方法[J].船舶力学,2015,19(8):1001-1010.Yu Mengsa,Bai Zhenguo,Lu Shijin.Calculation of self noise in an irregular acoustic cavity under random surface excitation[J].Journal of Ship Mechanics,2015,19(8):1001-1010.
[18]Davies H G.Acoustic radiation from loaded rectangular plates[R].Boston,Us.MIT Report No.71476-1,1969.