针对圆柱形空腔吸声覆盖层低频吸声性能比较差,建立多层材料圆柱形空腔结构覆盖层的COMSOL有限元模型,通过采用波导有限元-传递矩阵法对有限元模型的验证并对其进行吸声特性数值仿真分析。结果表明:理论计算与数值仿真的曲线趋势大致吻合则该有限元模型有效;多层材料吸声覆盖层低频吸声特性明显优于单层材料吸声覆盖层,并且采用不同穿孔率、损耗因子、杨氏模量等参数的变化分析了各种参数的变化对吸声系数曲线的影响,为下一步的声学优化提供了具体指导。
Since the poor property of multiple-Layered material cylindrical-hole layer absorption coating at low lowfrequency,the COMSOL finite element model of multiple-layered material cylindrical-hole layer absorption coating was built. The finite element model was test to analyze the absorption characteristics by using the waveguide finite elementtransfer matrix method. The calculation results indicate that the curve of the theoretical calculation and numerical simulations was roughly the same so the finite element model is valid.By the analysis of the finite element,the absorption characteristics of this kind of the multi-layer material structure are superior to the monolayer material structure. Besides, the future acoustic optimization is guided by the influence of absorption effect of the different punching rate,lossfactors,Young modulus.
2016,38(4): 33-37 收稿日期：2016-01-08
DOI：10.3404/j.issn.1672-7619.2016.04.007
分类号：O429;O427.5;O427.1
基金项目：国家自然科学基金资助项目(51179197);国家自然科学基金青年基金资助项目(51509253)
作者简介：刘国强(1991-),男,硕士研究生,研究方向为舰船振动与噪声控制。
参考文献：
[1] 张宏军, 邱伯华, 石磊, 等. 消声瓦技术的现状与发展趋势[J]. 舰船科学技术, 2001(4):6-10, 14. ZHANG Hong-jun, QIU Bo-hua, SHI Lei, et al. The current status and developing tendency of technology of anechoic coating[J]. Ship Science and Technology, 2001(4):6-10, 14.
[2] 汤渭霖, 何世平, 范军. 含圆柱形空腔吸声覆盖层的二维理论[J]. 声学学报, 2005, 30(4):289-295. TANG Wei-lin, HE Shi-ping, FAN Jun. Two-dimensional model for acoustic absorption of viscoelastic coating containing cylindrical holes[J]. Acta Acustica, 2005, 30(4):289-295.
[3] HLADKY-HENNION A C, DECARPIGNY J N. Analysis of the scattering of a plane acoustic wave by a doubly periodic structure using the finite element method:application to Alberich anechoic coatings[J]. Journal of the Acoustical Society of America, 1991, 90(6):3356-3367.
[4] CAI C, HUNG K C, KHAN M S. Simulation-based analysis of acoustic absorbent lining subject to normal plane wave incidence[J]. Journal of Sound and Vibration, 2006, 291(3/5):656-680.
[5] 商超, 魏英杰, 张嘉钟, 等. 基于有限元法的Alberich型覆盖层吸声特性研究[J]. 船舶力学, 2011, 15(4):443-448. SHANG Chao, WEI Ying-jie, ZHANG Jia-zhong, et al. Study of the absorption characteristics of Alberich anechoic coating based on the finite element method[J]. Journal of Ship Mechanics, 2011, 15(4):443-448.
[6] 陶猛, 卓琳凯. 基于ANSYS的吸声覆盖层声学性能计算与分析[J]. 振动与冲击, 2011, 30(1):87-90. TAO Meng, ZHUO Lin-kai. Simulation and analysis for acoustic performance of a sound absorption coating using ANSYS software[J]. Journal of Vibration and Shock, 2011, 30(1):87-90.
[7] 谭红波, 赵洪, 徐海亭. 有限元法分析空腔周期分布粘弹性层的声特性[J]. 声学学报, 2003, 28(3):277-282. TAN Hong-bo, ZHAO Hong, XU Hai-ting. Sound characteristics of the viscoelastic layer containing periodic cavities by the finite element method[J]. Acta Acustica, 2003, 28(3):277-282.
[8] EASWARAN V, MUNJAL M L. Analysis of reflection characteristics of a normal incidence plane wave on resonant sound absorbers:A finite element approach[J]. The Journal of the Acoustical Society of America, 1993, 93(3):1308-1318.
[9] 陶猛, 卓琳凯. 组合腔型吸声覆盖层的声学特性分析[J]. 上海交通大学学报, 2013, 47(3):408-412. TAO Meng, ZHUO Lin-kai. Acoustic performance of sound absorption coating containing composite cavities[J]. Journal of Shanghai Jiaotong UNiversity, 2013, 47(3):408-412.
[10] 商超, 魏英杰, 张嘉钟, 等. 含椭圆柱型空腔的声学覆盖层的吸声特性研究[J]. 哈尔滨工业大学学报, 2012, 44(1):22-25. SHANG Chao, WEI Ying-jie, ZHANG Jia-zhong, et al. Absorption characteristics of anechoic coating embedding elliptic-cylinder cavities[J]. Journal of Harbin INstitute of Technology, 2012, 44(1):22-25.
[11] DUHAMEL D, MACE B R, BRENNAN M J. Finite element analysis of the vibrations of waveguides and periodic structures[J]. Journal of Sound and Vibration, 2006, 294(1/2):205-220.
[12] VIGRAN T E. Sound transmission in multilayered structure-Introducing finite structural connections in the transfer matrix method[J]. Applied Acoustics, 2010, 71(1):39-44.
