Engineering Transactions, 65, 1, pp. 97–103, 2017

Optimal Parameters of a Dynamically Loaded Patch/Layer Structure Against the Elastic-Brittle Interface Debonding

Jordanka IVANOVA
European Polytechnical University
Bulgaria

Tatyana PETROVA
Bulgarian Academy of Sciences,
Bulgaria

Elisaveta KIRILOVA
Bulgarian Academy of Sciences
Bulgaria

Wilfried BECKER
Technical University of Darmstadt
Germany

A one-dimensional shear-lag model was developed to study the high frequency, dynamic, time-harmonic mechanical behavior of the overlap zone of a piezoelastic patch attached to an elastic host layer and subjected to electric, temperature and moisture excitation. It was interesting to see that the change of the geometry of the overlap zone leads to different solutions after some frequency, which is responsible for different dynamic behavior of the considered structure. Furthermore, the model was involved in an optimization framework (genetic algorithm-GA) in order to find the optimal values of the model parameters of the patch/layer configuration.
Keywords: PZT-4/graphite-epoxy; shear lag mode; genetic algorithm
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