Recursive stiffness matrix method for wave propagation in stratified media

被引:19
|
作者
Wang, L [1 ]
Rokhlin, SI [1 ]
机构
[1] Ohio State Univ, Nondestruct Evaluat Program, Edison Joining Technol Ctr, Columbus, OH 43221 USA
关键词
D O I
10.1785/0120010184
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
A stable recursive stiffness matrix method is described for wave propagation in a layered elastic medium. The 4 X 4 global stiffness matrix for a stratified medium is recursively calculated from the layer stiffness matrices. The layer stiffness matrix has only six different elements, which are given in closed form. For general buried sources, a simple formulation has been developed to calculate the response for arbitrary positions of the receivers. Based on this method, characteristic equations for surface and guided modes in stratified media have also been obtained. The algorithm is unconditionally stable and retains the simplicity and flexibility of the transfer matrix method.
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页码:1129 / 1135
页数:7
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