Modal summation methods for structural dynamic computations
作者:
P. Leger,
E. L. Wilson,
期刊:
Earthquake Engineering&Structural Dynamics
(WILEY Available online 1988)
卷期:
Volume 16,
issue 1
页码: 23-27
ISSN:0098-8847
年代: 1988
DOI:10.1002/eqe.4290160103
出版商: John Wiley&Sons, Ltd
数据来源: WILEY
摘要:
AbstractThe rate of convergence of the conventional mode superposition method can be significantly improved for systems subjected to relatively low frequency loadings by adding static correction terms to approximate the contribution of higher modes neglected by the use of a truncated eigenbasis. Two computational variants of the classical mode‐acceleration method are developed for that purpose. It is recommended that the pseudo‐static displacement correction vector should be computed from an expansion of the flexibility matrix in terms of the retained eigenvectors for actual computer implementat
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