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Neural-network-based reliability analysis: a comparative study

✍ Scribed by Jorge E Hurtado; Diego A Alvarez

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
552 KB
Volume
191
Category
Article
ISSN
0045-7825

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✦ Synopsis

A study on the applicability of different kinds of neural networks for the probabilistic analysis of structures, when the sources of randomness can be modeled as random variables, is summarized. The networks are employed as numerical devices for substituting the finite element code needed by Monte Carlo simulation. The comparison comprehends two network types (multi-layer perceptrons and radial basis functions classifiers), cost functions (sum of square errors and cross-entropy), optimization algorithms (back-propagation, Gauss–Newton, Newton–Raphson), sampling methods for generating the training population (using uniform and actual distributions of the variables) and purposes of neural network use (as functional approximators and data classifiers). The comparative study is performed over four examples, corresponding to different types of the limit state function and structural behaviors. The analysis indicates some recommended ways of employing neural networks in this field.

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