Lookup NU author(s): Ahmed El-Hewy,
Professor Ehsan Mesbahi,
Dr Yongchang Pu
In order to predict the failure probability of a complicated structure, the structural responses usually need to be estimated by a numerical procedure, such as finite element method. To reduce the computational effort required for reliability analysis, response surface method could be used. However the conventional response surface method is still time consuming especially when the number of random variables is large. In this paper, an artificial neural network (ANN)–based response surface method is proposed. In this method, the relation between the random variables (input) and structural responses is established using ANN models. ANN model is then connected to a reliability method, such as first order and second moment (FORM), or Monte Carlo simulation method (MCS), to predict the failure probability. The proposed method is applied to four examples to validate its accuracy and efficiency. The obtained results show that the ANN-based response surface method is more efficient and accurate than the conventional response surface method.
Author(s): Hosni Elhewy A, Mesbahi E, Pu Y
Publication type: Article
Publication status: Published
Journal: Probabilistic Engineering Mechanics
Print publication date: 22/09/2005
Date deposited: 18/04/2008
ISSN (print): 0266-8920
ISSN (electronic): 1878-4275
Publisher: Elsevier Ltd.
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