Analysis of multiple edge cracks in a non-homogeneous piezoelectric layer

6th International Conference on Fracture Fatigue and Wear

Nourazar, M.^1 ; Ayatollahi, M.^1

Faculty of Engineering, University of Zanjan, P. O. Box 45195-313, Zanjan, Iran^1

关键词: Dislocation densities;    Distributed dislocation technique;    Edge cracks;    Electrical loading;    Field intensity factors;    Functionally graded piezoelectric;    Non-homogeneous;    Piezoelectric layers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/843/1/012014/pdf
DOI  :  10.1088/1742-6596/843/1/012014

来源: IOP

【 摘 要 】

This study is concerned with the treatment of the several edge cracks in a functionally graded piezoelectric (FGP) layer under anti-plane mechanical and in-plane electrical loading. The edge crack is assumed to be either electrically impermeable or permeable. The problem is formulated by using distributed dislocation technique. The integral equations are constructed for the analysis of a FGP layer, in which the unknown variables are dislocation densities. By use of the dislocation densities, the field intensity factors are calculated. Numerical examples are provided to show the effect of the location and orientations of edge crack upon the stress intensity factors.