文章摘要
聂永发,朱海潮.复杂结构声辐射模态的计算[J].,2014,33(6):534-540
复杂结构声辐射模态的计算
The calculation of acoustic radiation modes of the complicated structure
投稿时间:2013-11-25  修订日期:2014-11-03
中文摘要:
      结构辐射阻矩阵的特征向量就是其声辐射模态,复杂结构的辐射阻矩阵获取困难阻碍了声辐射模态理论的进一步应用。为此提出一种基于等效源方法的复杂结构辐射阻矩阵计算方法,由此形成了一套完整的计算复杂结构声辐射模态方法。最后通过仿真算例对影响结构辐射阻矩阵计算精度的因素进行了分析,给出了复杂结构辐射阻矩阵构造的一般原则。理论推导和数值仿真算例表明所提出的复杂结构声辐射模态计算方法是有效的。该方法简化了复杂结构声辐射模态的计算,提高了计算效率。
英文摘要:
      The difficulty in acquiring radiation resistance of the complicated structure has hindered the further application of the acoustic radiation modes theory based on eigenvalue decomposition of structure radiation resistance matrix. An approach to calculation of structure radiation resistance matrix based on equivalent sources method is proposed which can solve the inherent problems of the conventional computational method of acoustic radiation modes. Finally, the paper also analyses the factors which influence the calculation accuracy of radiation resistance matrix of the complicated structure with a simulation example and a general instruction principle of radiation resistance matrix of the complicated structure is presented. Theory derivation and simulation examples show that the computational method of acoustic radiation modes of the complicated structure proposed is valid. The proposed method simplifies the calculation of acoustic radiation modes of the complicated structure and its computation efficiency is higher.
DOI:10.11684/j.issn.1000-310X.2014.06.010
中文关键词: 声辐射模态,辐射阻矩阵,等效源法
英文关键词: Acoustic radiation modes, Radiation resistance matrix,Equivalent sources method
基金项目:国家自然科学基金项目(面上项目)
作者单位E-mail
聂永发 振动与噪声研究所船舶振动噪声重点实验室 yongfnie@163.com 
朱海潮 振动与噪声研究所船舶振动噪声重点实验室 haichaozhu@163.com 
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