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Influence of the geometry and the frequency range on the interface delamination in smart patch/layer structures under combined dynamic loading
Author(s) -
Kirilova Elisaveta,
Petrova Tatyana,
Becker Wilfried,
Ivanova Jordanka
Publication year - 2017
Publication title -
zamm ‐ journal of applied mathematics and mechanics / zeitschrift für angewandte mathematik und mechanik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.449
H-Index - 51
eISSN - 1521-4001
pISSN - 0044-2267
DOI - 10.1002/zamm.201600273
Subject(s) - materials science , delamination (geology) , composite material , brittleness , modulus , shear (geology) , range (aeronautics) , shear modulus , structural engineering , engineering , geology , paleontology , subduction , tectonics
The paper deals with the interface behavior of a smart patch/layer lightweight structure subjected to combined time harmonic mechanical loading, electric field and environmental conditions. The applied dynamic shear‐lag and Fourier method refer to the overlap zone of the considered structure. It gives a possibility to obtain solutions in a closed form for axial and shear stresses of the structure. The types of solutions obtained depend mainly on the adherends’ thickness, the frequency interval of applied dynamic loading and the shear modulus of the used adhesive. At a given constant ratio of thicknesses of the adherends, the frequency interval of the dynamic load can change drastically the type of solution of the considered system of ordinary differential equations. Theoretical predictions for single debond length of patch/layer structure at an elastic‐brittle interface behavior are provided. The influence of the ratio of thicknesses of the adherends in PZT‐5H/CFRP patch/layer structure and the frequency range of applied dynamic mechanical loading on the interface delamination is investigated. All results are illustrated in figures and tables and are discussed.