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Reliability sensitivity analysis based on multi-hyperplane combination method

Authors :
Yu-ge Dong
Hai-tao Lu
Ling-ling Li
Source :
Defence Technology, Vol 10, Iss 4, Pp 354-359 (2014)
Publication Year :
2014
Publisher :
KeAi Communications Co., Ltd., 2014.

Abstract

For a nonlinear limit state function, the first-order reliability method (FORM) may cause large errors in the computation of not only the reliability index or failure probability but also the reliability sensitivity. In order to obtain more the accurate results of the reliability sensitivity analysis, a number of hyperplanes are built near the design point by first-order Tayler series expansion, which replace the known nonlinear limit state hypersurface, and an equivalent computational method is utilized to construct an equivalent hyperplane of the obtained hyperplanes. And the reliability sensitivities can be estimated more accurately by the derived equations based on the equivalent hyperplane. An example shows that the method is effective and feasible.

Details

Language :
English
ISSN :
22149147
Volume :
10
Issue :
4
Database :
Directory of Open Access Journals
Journal :
Defence Technology
Publication Type :
Academic Journal
Accession number :
edsdoj.83af22555543d2838e4cd50072108e
Document Type :
article
Full Text :
https://doi.org/10.1016/j.dt.2014.07.010