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Erschienen in:
2015 | OriginalPaper | Buchkapitel
Multicut-High Dimensional Model Representation for Reliability Bounds Estimation
verfasst von : A. S. Balu, B. N. Rao
Erschienen in: Numerical Methods for Reliability and Safety Assessment
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Abstract
The structural reliability analysis in presence of mixed uncertain variables demands more computation as the entire configuration of fuzzy variables needs to be explored. The existence of multiple design points plays an important role in the accuracy of results as the optimization algorithms may converge to a local design point by neglecting the main contribution from the global design point. Therefore, in this chapter, a method for estimating the reliability bounds of structural systems involving multiple design points in presence of mixed uncertain variables is presented. The proposed method involves weight function to identify multiple design points, multicut-high dimensional model representation for the limit state function approximation, transformation technique to obtain the contribution of the fuzzy variables and fast Fourier transform for solving the convolution integral.