On the interaction between a semi-infinite anti-crack and a screw dislocation in piezoelectric solid

Electro-elastic stress investigation on the interaction between a semi-infinite anti-crack and a screw dislocation under anti-plane mechanical and in-plane electrical loading is carried out. The screw dislocation is subjected to a line-charge and a line-force at the core. Explicit closed-form analytical solutions for the stress fields are derived by means of complex variable and conformal mapping methods. The stress and electric intensity factors at the anti-crack tip are found to be classic 1/√r singularity. The force on the dislocation is also calculated and discussed for two typical PZT materials. © 2002 Elsevier Science Ltd. All rights reserved.