粘弹性材料非局域声阻抗模型及参数优化

范真真; 王同庆; 杨明绥

粘弹性材料非局域声阻抗模型及参数优化

北京航空航天大学能源与动力工程学院, 北京 100191

详细信息

中图分类号: TB 132
计量
- 文章访问数: 2293
- HTML全文浏览量: 233
- PDF下载量: 540
- 被引次数: 0
出版历程
- 收稿日期: 2010-10-13
- 网络出版日期: 2012-02-29

Optimization of non-local impedance parameters of viscoelastic materials

School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 针对敷设粘弹性材料的刚体声散射问题提出了一种利用等效非局域阻抗基本代数模型计算表面声阻抗矩阵的方法.并以敷设粘弹性材料的球体为例,采用全局收敛移动近似算法(GCMMA, Globally Convergent Method of Moving Asymptotes)对非局域声阻抗代数模型的参数进行了优化,使其声散射计算结果与使用有限元得到的结果一致.研究表明:等效非局域阻抗基本代数模型可以应用于表面敷设粘弹性材料球体声散射的数值计算,为研究潜艇等复杂水下目标的声散射提供了有效的途径.
- 非局域声阻抗 /
- 粘弹性 /
- 全局收敛移动近似算法
Abstract: The context was devoted to the construction of a basic algebraic model for calculating non-local acoustic impedance matrix about acoustic scattering problem. A sphere laid by a certain kind of viscoelastic material was waken for example. The globally convergent method of moving asymptotes (GCMMA) was applied to optimize the parameters of the non-local acoustic impedance model and was verified. The results show that the basic algebraic model can be used to calculate the surface non-local acoustic impedance of the sphere laid viscoelastic materials. This conclusion will provide an effective research method for studying acoustic scattering of other underwater targets laid viscoelastic materials.
- non-local acoustic impedance /
- viscoelastic /
- globally convergent method of moving asymptotes(GCMMA)

HTML全文

参考文献(6)

[1]	Faverjon B,Soize C.Equivalent acoustic impedance model.part 1:experiments and semi-physical model [J].Journal of Sound and Vibration,2004,276:571-592
[2]	杨明绥,王同庆,范真真.粘弹性材料表面声阻抗代数模型的数值研究[J].哈尔滨工程大学学报,2011(6):724-729 Yang M S,Wang T Q,Fan Z Z.Study of numerical simulation on non-local property of acoustic impedance of viscoelastic material[J].Journal of Harbin Engineering University,2011(6):724-729(in Chinese)
[3]	Yang M S,Wang T Q,Fan Z Z.The influence of non-local property of surface acoustic impedance on acoustic scattering .AIAA,2010-2277,2009
[4]	Svanberg K.A class of globally convergent optimization methods based on conservative convex separable approximations [J].SIAM Journal on Optimization,2002,12(2):555-573
[5]	Wang T Q,Yang Z G.Scattering of plane wave from moving body underwater with finite impedance surface [J].Journal of Sound and Vibration,2004,273(4):969-987
[6]	Trindade M A,Reduced-order finite element models of viscoelastically damped beams through internal variables projection [J].Journal of Vibration and Acoustics,2006,128(4):501-508