吸收边界条件下平面SH波散射的数值模拟  

A numerical simulation for the scattering of SH-wave in infinite area

作　　者：黄祖光[1] 刘云 

机构地区：[1]石家庄铁道学院 [2]石家庄市市政公司

出　　处：《山西建筑》2005年第2期25-26,共2页Shanxi Architecture

摘　　要：建立了在无限区域内求解任意形状散射体对SH波散射的数值模拟方法。采用一种新的吸收边界条件对Som merfeld辐射条件进行近似 ,这种吸收边界条件具有解耦特性 ,不但简化了计算 ,且近似程度较高。数值计算结果与解析结果的比较表明了此方法具有良好的吸收效果。In this paper, a numerical simulation method has developed for the scattering problem of SH-wave in infinite area. By using absorbing boundary condition the Sommerfeld radiation condition is approximated. The absorbing boundary condition has the character of solving the coupling that simplifies the calculations and higher accuracy. The comparisons of numerical results with the analytical solutions demonstrate the efficiency of this method. The scattering of special shaped scatter is calculated by using this method.

关 键 词：SH波散射 吸收边界条件 有限元 

分 类 号：TU313.1[建筑科学—结构工程]