On the shift‐invert Lanczos method for the buckling eigenvalue problem
On the shift‐invert Lanczos method for the buckling eigenvalue problem
复制标题
屈曲特征值问题的平移-反转Lanczos方法
DOI:
10.1002/nme.6640
复制
发表时间:
2021
影响因子:
2.9
通讯作者:
Bai, Zhaojun
中科院分区:
文献类型:
--
作者:
Lin, Chao‐Ping;Xie, Huiqing;Grimes, Roger;Bai, Zhaojun
We consider the problem of extracting a few desired eigenpairs of the buckling eigenvalue problem, whereKis symmetric positive semi‐definite,KGis symmetric indefinite, and the pencilis singular, namely,KandKGshare a nontrivial common nullspace. Moreover, in practical buckling analysis of structures, bases for the nullspace ofKand the common nullspace ofKandKGare available. There are two open issues for developing an industrial strength shift‐invert Lanczos method: (1) the shift‐invert operatordoes not exist or is extremely ill‐conditioned, and (2) the use of the semi‐inner product induced byKdrives the Lanczos vectors rapidly toward the nullspace ofK, which leads to a rapid growth of the Lanczos vectors in norms and causes permanent loss of information and the failure of the method. In this paper, we address these two issues by proposing a generalized buckling spectral transformation of the singular penciland a regularization of the inner product via a low‐rank updating of the semi‐positive definiteness ofK. The efficacy of our approach is demonstrated by numerical examples, including one from industrial buckling analysis.
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影响因子:
3.1
作者:
Ron Estrin;C. Greif
通讯作者:
C. Greif
DOI:
10.1137/s0895479800381331
发表时间:
2002
期刊:
SIAM J. Matrix Anal. Appl.
影响因子:
--
作者:
P. Arbenz;Z. Drmač
通讯作者:
Z. Drmač
影响因子:
4.3
作者:
V. Frayssé;V. Toumazou
通讯作者:
V. Toumazou
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
K. Meerbergen
通讯作者:
K. Meerbergen
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
C. Farhat;M. Géradin
通讯作者:
M. Géradin