Soft computing techniques in parameter identification and probabilistic seismic analysis of structures

Authors:
Y. Tsompanakis;N. D. Lagaros;G. E. Stavroulakis
Affiliations:
Department of Applied Sciences, Technical University of Crete, University Campus, Chania 73100, Greece;School of Civil Engineering, National Technical University of Athens, Zografou Campus, Athens 15780, Greece;Department of Production Engineering and Management, Technical University of Crete, Chania 73100, Greece and Department of Civil Engineering, Technical University of Braunschweig, Germany
Venue:
Advances in Engineering Software
Year:
2008

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Abstract

The objective of this paper is to investigate the efficiency of soft computing methods, in particular methodologies based on neural networks, when incorporated into the solution of computationally intensive engineering problems. Two types of applications have been considered, namely parameter (flaw) identification and probabilistic seismic analysis of structures. Artificial neural networks (ANNs) based metamodels are used in order to replace the time-consuming repeated structural analyses. The back-propagation algorithm is employed for training the ANN, using data derived from selected analyses. The trained ANN is then used to predict the values of the necessary data. The numerical tests demonstrate the computational advantages of the proposed methodologies.