Journal
THEORETICAL AND APPLIED FRACTURE MECHANICS
Volume 96, Issue -, Pages 334-350Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.tafmec.2018.05.010
Keywords
Mixed mode loading; Piezoelectric half-plane; Several moving cracks; Climb and glide edge dislocations
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In this work, the steady state problem of multiple Yoffe-type cracks propagating in a piezoelectric half-plane within the framework of linear electroelasticity under in-plane electro-elastic loading is studied. At first, the closed-form solution of the moving electric and Volterra type climb and glide edge dislocations are derived using the complex Fourier transforms to achieve the integral equations of a piezoelectric half-plane with several moving cracks. Then, the integral equations with Cauchy-kind singularity are solved numerically to determine the mixed mode stress intensity factors and the electric displacement intensity factors in a piezoelectric medium. Finally, the effects of the loading conditions, crack moving speed, cracks lengths, cracks interactions and geometrical parameters on the field intensity factors are considered.
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