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Coupled behaviour of interacting dielectric cracks in piezoelectric materials

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Abstract

Existing studies indicate that the commonly used electrically impermeable and permeable crack models may be inadequate in evaluating the fracture behaviour of piezoelectric materials in some cases. In this paper, a dielectric crack model based on the ‘real’ electric boundary condition is used to study the electromechanical behaviour of interacting cracks arbitrarily oriented in an infinite piezoelectric medium. The electric boundary condition along the crack surfaces is governed by the opening displacement of the cracks. The formulation of this nonlinear problem is based on modelling the cracks using distributed dislocations and solving the resulting nonlinear singular integral equations using Chebyshev polynomials. Numerical simulation is conducted to show the effect of crack orientation, crack interaction and electric boundary condition upon the fracture behaviour of cracked piezoelectric media.

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, Canada

    X. D. Wang & L. Y. Jiang

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  1. X. D. Wang
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  2. L. Y. Jiang
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Correspondence to X. D. Wang.

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Wang, X.D., Jiang, L.Y. Coupled behaviour of interacting dielectric cracks in piezoelectric materials. Int J Fract 132, 115–133 (2005). https://doi.org/10.1007/s10704-005-0625-3

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  • DOI: https://doi.org/10.1007/s10704-005-0625-3

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