A generalized screw dislocation in a piezoelectric trimaterial body

Article type: Research Article

Authors: Zhou, Zhi-Dong^{a; *} | Nishioka, Toshihisa^b | Kuang, Zhen-Bang^a

Affiliations: [a] Department of Engineering Mechanics, Shanghai Jiaotong University, Shanghai 200240, PR China | [b] Simulation Engineering Laboratory, Department of Ocean Mechanical Engineering, Faculty of Maritime and Sciences, Kobe University, Kobe, 658-0022, Japan

Correspondence: [*] Corresponding author. Tel.: +86 21 54743067; Fax: +86 21 54743044; E-mail: Zdzhou@sjtu.edu.cn

Abstract: A generalized screw dislocation in the piezoelectric trimaterial with two parallel plane interfaces is studied. The Burgers vector of the generalized screw dislocation normal to the isotropic base plane and a discontinuous electric potential locates in the isotropic plane, simultaneously a line force and a line charge are acted at the core. The singular solution of a generalized screw dislocation in a homogeneous piezoelectric ceramic is used as the basis for solving the piezoelectric trimaterial body. A Schwarz-Neumann's alternating technique [1] is applied to construct this trimaterial solution. Further, the generalized Peach Koehler forces acting on the generalized screw dislocation are considered. Numerical illustrations for the interaction are given and some discussions on the effects of the material mismatches are given. It is shown that the present solutions are available and useful.

Keywords: Piezoelectric composite, dislocation, trimaterial body, alternating technique, complex potential

DOI: 10.3233/JAE-2007-816

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 26, no. 1-2, pp. 21-36, 2007