Alberich型水下声学覆盖层隔声特性及机理分析

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• 英文论文题名：Underwater insulation properties and mechanisms of Alberich anechoic coating
• 论文作者：周江龙 ; 尹剑飞 ; 温激鸿 ; 郁殿龙
• 英文论文作者：ZHOU Jiang-long ; YIN Jian-fei ; WEN Ji-hong ; YU Dian-long ; Science and Technology on Integrated Logistics Support Laboratory ; College of Mechatronic Engineering and Automation ; National University of Defense Technology
• 年：2016
• 作者机构：国防科学技术大学装备综合保障技术重点实验室;
• 论文关键词：水下隔声 ; Alberich型覆盖层 ; 隔声机理 ; 静水压力
• 英文论文关键词：underwater insulation ; Alberich layer ; insulation mechanisms ; static pressure
• 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：O427
• 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：841k
• 原文格式：D
• 会议级别：全国

摘要

水下结构敷设隔声覆盖层是阻断内部噪声向外传播的有效途径之一。通过在材料和水介质之间建立"阻抗失配"阻隔声波向外传播。本文基于COMSOL有限元软件,以Alberich型圆柱空腔覆盖层为研究对象,分析了内部周期分布不同尺寸空腔时的声学性能。并采用等效参数法将带空腔的覆盖层等效为均匀介质,分析了其隔声机理。结果表明,相同空腔填充率的情况下,圆柱空腔的直径较大时覆盖层与水的阻抗失配比更大,隔声性能更好。大空腔引起的低频隔声峰值与整个覆盖层在该频域内等效声速的减小有关。此外,分析得出低频的隔声峰值是由上盖板的弯曲振动引起。最后文章分析了静水压力对覆盖层声学性能的影响,随着静水压力的增大,材料的等效声速增大,覆盖层的隔声性能下降。
Introducing the insulation layer is an effective way to reduce sound radiation from underwater structures. Impedance mismatch properties between water and layer is closely related to sound insulation performance.Finite element method with COMSOL is used to calculate sound transmission loss in this paper.In order to investigate the insulation mechanisms of Alberich layers, the coating layer with cylindrical cavities is approximated to a homogeneous layer with equivalent material properties. The results show that the coating layer with big cylindrical cavities which cause a higher impendence mismatch has a better performance on insulation when porosity is same. Moreover, such a coating layer has relatively lower velocity, which is closely related to insulation performance. At a low frequency, the transmission loss peak is associated with the dynamic behavior of the cover layer. Compression performance of Alberich layer is also discussed in this paper. With the increase of static pressure, equivalent sound velocity of material increased, and sound insulation performance of layer is degraded.

引文

[1]Oberst H.Reasonant sound-absorber[M]//Richardson E G.Technical Aspects of Sound:chapter 7,287-327.
    [2]S.N.Panigrahi,C.S.Jog,M.L.Munjal.Multi-foucs design of underwater noise control lingings based on Finit element analysis[J].Applied Acoustic.2008,69:1142-1153.
    [3]黄凌志,肖勇,温激鸿,杨海滨,温熙森.一种含横向圆柱形空腔的声学覆盖层的去耦机理分析[J].物理学报.2015,64(15):154301.
    [4]陶景桥.新型潜艇隔声去耦瓦声学性能研究及改进[D].哈尔滨:哈尔滨工程大学,2005.
    [5]Brekhovskikh L M.Waves in layered media(New York:Acadamic Press)p7–9.
    [6]陶猛.静水压力下吸声覆盖层的声学性能分析[J].上海交通大学学报.2011,4(9):1340-1344.
    [7]赵颖坤,盛美萍,王朝杰,张臻元.水中蜂窝夹层结构的隔声性能[J].机械科学与技术,2006,25(6):745-747.
    [8]Michael R.Haberman,Yves H.Berthelot,and Mohammed Cherkaoui.Transmission loss of viscoelastic materials containing oriented ellipsoidal coated micro inclusions[J].Acoust.Soc.Am.2005,118(5):2984-2992.
    [9]C.Cai,K.C.Hung,M.S.Khan.Simulation-based analysis of acoustic absorbent lining subject to normal plane wave incidence[J].Journal of Sound and Vibration 291(2006):656–68.
    [10]LANE R.Absorption mechanisms for waterborne sound in Alberich anechoic layers[J].Ultrasonics.1985:90-91
    [11]唐广鑫,白国锋,刘克.水下含气泡橡胶材料的隔声性能的仿真[J].声学技术.2008,27(5):680-683.
    [12]C.Cai,K.C.Hung,M.S.Khan.Simulation-based analysis of acoustic absorbent lining subject to normal plane wave incidence[J].Journal of Sound and Vibration 291(2006)656–680.
    [13]张振国,张秀丽,张娜等.传递矩阵-驻波管法研究材料隔声性能[J].材料导报.2010,24(5):118-121.