New infinite elements for a finite element analysis of 2D scattering problems

被引:8
作者
Gratkowski, S
Pichon, L
Razek, A
机构
[1] UNIV PARIS 06, ECOLE SUPER ELECT, URA D0127 CNRS, LGEP, F-91192 GIF SUR YVETTE, FRANCE
[2] UNIV PARIS 11, F-91192 GIF SUR YVETTE, FRANCE
关键词
D O I
10.1109/20.497382
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Two new formulations of infinite elements are proposed. These elements in combination with the conventional finite elements yield coupled finite element formulations for 2D scattering problems. The first formulation works for any shape of the finite element legion, while the second one has been developed for a rectangular outer boundary. In comparison with the previous infinite elements, the present infinite elements are constructed in such a way that simple expressions have been obtained for their element matrices. As a result of this, no formula for numerical quadrature over the infinite region is necessary and the infinite elements can easily be incorporated into standard finite element codes. Two numerical examples are given.
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页码:882 / 885
页数:4
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