学术
摘 要:
讨论了分析结构与声耦合的WB法.与基于单元的方法相比,结构和声域都不需要划分成小的单元以及在每个单元内采用简单、近似的形函数来求解动力学方程,而是整个域内的场变量（结构的位移或者声压）由精确满足动力学方程齐次部分的波函数和非齐次动力学方程的特解函数组成.波函数的常数系数根据边界条件通过加权余量法得到.讨论了这种方法的数值条件和收敛特性.结果表明WB法比基于单元的方法计算效率更高以及收敛特性更好.[著者文摘]
文章出处:
《华中科技大学学报：自然科学版》-2007年35卷8期 -119-121页
文献标识码:
A
文章编号:
1671-4512（2007）08-0119-03
Wave based method for coupled structural-acoustic analysis
He Zeng , Peng Weicai , Wang Jiaqiang （College.of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China）
Abstract:
A wave based method for coupled structural-acoustic analysis was discussed. In contrast with the element based method, in which the structural and acoustic domains are discretized into small elements and the dynamic equations are solved within each element using simple, approximate shape functions, the field variable distributions within the entire of the structural or acoustic domains are approximated in terms of wave functions, which are exact solutions of the homogeneous parts of the dynamic equations and particular solutions of the inhomogeneous dynamic equations are added. The contributions of the wave functions are determined by applying the boundary conditions in a weighted residual formulation.[著者文摘]
Key words:
structural-acoustic; weighted residual formulation; dynamic equations
基金资助:
国家自然科学基金资助项目（10472035）.
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