A preconditioning technique for indefinite linear systems

被引：3
|
作者：
Komzsik, L
Poschmann, P
Sharapov, I
机构：
[1] MACNEAL SCHWENDLER CORP,NUMER METHODS DEV,LOS ANGELES,CA 90041
[2] UNIV CALIF LOS ANGELES,DEPT MATH,LOS ANGELES,CA 90024
来源：
FINITE ELEMENTS IN ANALYSIS AND DESIGN | 1997年 / 26卷 / 03期
关键词：
iterative solver; indefinite systems; preconditioning;
D O I：
10.1016/S0168-874X(97)00084-X
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
In this paper we discuss a new preconditioning technique developed for the solution of indefinite systems of linear equations. Such systems arise in finite element structural analysis using Lagrange multiplier based constraint processing. We use a specially constructed indefinite matrix as a preconditioner which is applied in every iteration step of the conjugate residual method. Numerical results for some test problems are presented.
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页码：253 / 258
页数：6
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