A piezoelectric screw dislocation interacts with interfacial collinear rigid lines in piezoelectric bimaterials

作者：Xiao Z M; Zhang H X; Chen B J^*

来源：International Journal of Solids and Structures, 2007, 44(1): 255-271.

DOI：10.1016/j.ijsolstr.2006.04.023

• piezoelectric
• bimaterials
• screw dislocation
• rigid lines
• interface
• energy release rate
• image force

Based on the complex variable method and perturbation technique, an analytical closed-form solution is derived for the interaction between a screw dislocation and collinear rigid lines along the interface of two dissimilar piezoelectric media under remote anti-plane mechanical and in-plane electrical loading. The rigid lines are either conducting or dielectric. The dislocation core is subjected to a line-force and a line-charge. A square-root singularity of field variables near the tip of an interfacial rigid line is observed. The rigid line extension force acting on the tip is obtained in terms of the strain and electric field intensity factor. The force on the dislocation due to the interfacial rigid line is calculated. The influence of the angular position of the dislocation, material properties and electromechanical coupling factor on the force is studied in detail.

• 出版日期2007-1-1
• 单位南阳理工学院