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

Bulgarian Academy of Sciences,

Elisaveta KIRILOVA
Bulgarian Academy of Sciences

Wilfried BECKER
Technical University of Darmstadt

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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Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).


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DOI: 10.24423/engtrans.697.2017