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Journal of Intelligent Material Systems and Structures
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Electroelastic Fracture Mechanics of Piezoelectric Layered Composites

Y. Shindo

Department of Materials Processing, Graduate School of Engineering, Tohoku University, Aoba-yama 6-6-02, Sendai 980-8579, Japan, shindo{at}material.tohoku.ac.jp

F. Narita

Department of Materials Processing, Graduate School of Engineering, Tohoku University, Aoba-yama 6-6-02, Sendai 980-8579, Japan

M. Mikami

Department of Materials Processing, Graduate School of Engineering, Tohoku University, Aoba-yama 6-6-02, Sendai 980-8579, Japan

This paper develops a theoretical electroelastic fracture mechanics for piezoelectric layered composites. A piezoelectric layer bonded between two elastic or piezoelectric materials containing a crack normal to the interfaces is considered. The ends of the crack are situated at equal distances away from the interfaces. Both analytical and simulation methods are formulated to determine the effects of applied electric field and polarization switching on the fracture mechanics parameters such as stress intensity factor, energy release rate, and energy density factor. The results for the exact (permeable) and approximate (impermeable) boundary conditions are presented in graphical form.

Key Words: elasticity • integral transforms • finite element method • piezocomposites • stress intensity factor • energy release rate • energy density factor • polarization switching • smart material systems

Journal of Intelligent Material Systems and Structures, Vol. 16, No. 7-8, 573-582 (2005)
DOI: 10.1177/1045389X05048329
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