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Abstract: This paper proposes the response surface method for finite element modelupdating. The response surface method is implemented by approximating thefinite element model surface response equation by a multi-layer perceptron. Theupdated parameters of the finite element model were calculated using geneticalgorithm by optimizing the surface response equation. The proposed method wascompared to the existing methods that use simulated annealing or geneticalgorithm together with a full finite element model for finite element modelupdating. The proposed method was tested on an unsymmetri-cal H-shapedstructure. It was observed that the proposed method gave the updated naturalfrequen-cies and mode shapes that were of the same order of accuracy as thosegiven by simulated annealing and genetic algorithm. Furthermore, it wasobserved that the response surface method achieved these results at acomputational speed that was more than 2.5 times as fast as the geneticalgorithm and a full finite element model and 24 times faster than thesimulated annealing.



Autor: Tshilidzi Marwala

Fuente: https://arxiv.org/







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