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An efficient evaluation of structural safety applying perturbation techniques

Title
An efficient evaluation of structural safety applying perturbation techniques
Type
Article in International Conference Proceedings Book
Year
2006
Authors
José Veiga
(Author)
Other
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António Abel Henriques
(Author)
FEUP
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Jorge Moreno Delgado
(Author)
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Scientific classification
CORDIS: Technological sciences > Engineering > Civil engineering > Structural engineering
Other information
Abstract (EN): The application of probabilistic techniques on structural safety evaluation has suffered a great expansion in the last years. However, one of the main problems in the introduction of these techniques is the long computational time consuming required, particularly when simulation methods as Monte-Carlo method are used, even when sampling reduction tech-niques are adopted. In this paper is presented an efficient structural reliability method that couples perturbation techniques with the finite element method. This method allows, in one only structural analysis, to evaluate the mean value and the standard deviation of the structural response, by defining previously the probability distribution of problem basic random variables. Consequently a much faster analysis is performed, when compared with the most frequent used methods based on reliability techniques. Finally a comparative example between the results obtained with this technique and other probabilistic methods are presented, allowing to appraise the potentialities of the proposed method.
Language: Portuguese
Type (Professor's evaluation): Scientific
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