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02-01-2019 | Original | Issue 7/2019

Archive of Applied Mechanics 7/2019

Dynamic fracture of a nano-cracked finite exponentially inhomogeneous piezoelectric solid

Journal:
Archive of Applied Mechanics > Issue 7/2019
Authors:
Petia Dineva, Marin Marinov, Tsviatko Rangelov
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Abstract

Aim of the study is to develop, verify and apply in simulations an efficient non-hypersingular traction boundary integral equation method for solution of anti-plane dynamic problem of a finite exponentially inhomogeneous piezoelectric solid with a nano-crack. The modeling approach is in the frame of continuum mechanics, wave propagation theory, the Gurtin and Murdoch surface elasticity theory and linear fracture mechanics. The simulations reveal the dependence of the stress concentration factors on the electromechanical coupling, on the type and characteristics of the dynamic load, on the position-dependent material properties, on the surface elasticity, on the size effect and on the wave–nanocrack–material gradient interaction in a bounded solid.

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