7th ECCOMAS Thematic Conference on the Mechanical Response of Composites (COMPOSITES 2019), Girona, İspanya, 18 - 20 Eylül 2019, cilt.1, sa.1, ss.13-22
In this study it is considered the buckling delamination problems of a PZT/Metal/PZT
rectangular thick plate with interface embedded cracks. Under uniformly distributed uniaxial
compressive static forces on two end planes, cracks contained by the plate is going to open
and in a certain value of this forces buckling delamination of the plate occur. In the practical
application owing to some values of geometrical and material parameters, different buckling
delamination mode or surface wrinkles of the plate can be seen [8-10]. Our aim is to
determine the buckling delamination modes of the considered plate as well as to determine
the effect of geometrical and material parameters of these surface wrinkles.
Theoretical investigations are made within the scope of the 3D linearized theory of stability
loss with utilizing the piecewise homogeneous body model using the electro-elasticity theory
[1,4,5]. It is supposed that there is an interface embedded crack between the face and core
layers and this plate is loaded with the uniformly-distributed compressive forces acting on
two opposite end planes. Considering some boundary conditions mathematical modeling of
the considered problems are made and solution to these boundary-value problems are made
numerically using 3D FEM coded by the authors. Buckling delamination mode of the
considered PZT sandwich plate and the effect of the problem parameters on this buckling
mode are analyzed and tried to clarify.