基于FETI的2维阵列电磁特性分析  

Electromagnetic Properties Analysis of 2-dinensional Array Based on FETI

作　　者：李近春[1] 

机构地区：[1]解放军理工大学通信工程学院研究生1队,江苏南京210007

出　　处：《电子质量》2012年第4期85-87,共3页Electronics Quality

摘　　要：应用有限元分裂互连方法(FETI)对2维阵列的电磁散射特性进行分析,将原求解区域划分成若干个不重叠的子区域,并根据其特性划分成9种类型。在相邻区域公共面上采用电场连续性条件,保证电场分量的连续性。对每个子域进行独立的有限元分析,通过公共面上的电流进行区域信息交换,确保相邻面上的区域耦合能够准确地被表示。此算法在保持有限元法计算精度的同时,大大减少了计算时间和内存消耗,拓展了有限元方法在周期结构上的应用。Finite element tearing and interconnecting method（FETI） is used to analyze the electromagnetic scattering of 2-dimensional array.The original computational domain is partitioned into several nonoverlapping subdomains,and devided into 9 types according to their characteristics.The electric continuity conditions is used to keep the electric field continuity on the interface.This algorithm analyze each subdomain independent by finite element methodm,the neighboring subdomian information is exchanged by the electric current on the interface,to ensure the coupling on the adjancent interface is expressed accurately.The algorithm maintain the accuracy of the finite element method,greatly reduce the computational time and memory consumption,and expand the finite element method application in the periodic structures.

关 键 词：有限元分裂互连方法(FETI) 2维阵列 电磁散射 

分 类 号：O441.4[理学—电磁学]