四川大学学报（自然科学版）2011，Vol.48Issue(2)：361-365,5.DOI:10.3969/j.issn.0490-6756.2011.02.021
声散射问题的一种新的无限元方法
A new infinite element method for acoustical scattering problems
摘要
Abstract
The propagation and attenuation of acoustic waves in exterior domains is the essential ingredient in the study of acoustic-structure interaction. In this paper the problems of acoustics scattering in infinite exterior region are investigated by using the method of infinite element method combined with conventional finite element method. The stiffness and mass matrixes of the infinite element are developed by applying residual weighting methods. The basic character of acoustic propagation in exterior domain and the infinite radiation conditions are fully taken into consideration in choosing the interpolation shape functions and weighting functions. Numerical examples are performed, which illustrate the effectiveness of this presented method in solving unbounded acoustic problems.关键词
无限元/声场/散射/结构声耦合Key words
infinite element method/ acoustical field/ scattering/ acoustic-structure interaction分类
数理科学引用本文复制引用
张晓君,吴国荣..声散射问题的一种新的无限元方法[J].四川大学学报（自然科学版）,2011,48(2):361-365,5.基金项目
浙江省重大科技攻关项目(2007C11039,2008C01057-2) （2007C11039,2008C01057-2）
