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EFFECT OF AN INTERFACE DEFECT IN A PATCH/LAYER JOINT UNDER DYNAMIC TIME HARMONIC LOAD
Author(s) -
Kirilova Elisaveta G.,
Becker Wilfried,
Ivanova Jordanka A.,
Petrova Tatyana S.
Publication year - 2017
Publication title -
ce/papers
Language(s) - English
Resource type - Journals
ISSN - 2509-7075
DOI - 10.1002/cepa.543
Subject(s) - joint (building) , harmonic , materials science , shear stress , shear (geology) , interface (matter) , structural engineering , lag , stress (linguistics) , layer (electronics) , mechanics , acoustics , composite material , computer science , engineering , physics , computer network , linguistics , philosophy , capillary number , capillary action
The study deals with the response of a smart patch/layer joint with interface defect (gap) subjected to dynamic time harmonic mechanical and electric load at environmental conditions. In order to find the axial displacements, shear stress and interface debond length in a closed analytical form a 1D modified, shear lag analysis is used. At given joint geometry and three different positions of the gap, a genetic algorithm is implemented to find the values of the model parameters at which a vanishing/minimal debond length is ensured. Moreover, for each optimal solution the influence of the length of the gap as well as the model parameters on the length of the interface debond length is investigated.