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1 2020

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A circular inclusion and two radial coaxial cracks with contacting faces in a piecewise homogeneous isotropic plate under bending

Sulym Heorhiy, Opanasovych Viktor, Zvizlo Ivan, Seliverstov Roman, Bilash Oksana

Acta Mechanica et Automatica

2020

Vol. 14, no. 1

16--21

The bending problem of an infinite, piecewise homogeneous, isotropic plate with circular interfacial zone and two coaxial radial cracks is solved on the assumption of crack closure along a line on the plate surface. Using the theory of functions of a complex variable, complex potentials and a superposition of plane problem of the elasticity theory and plate bending problem, the solution is obtained in the form of a system of singular integral equations, which is numerically solved after reducing to a system of linear algebraic equations by the mechanical quadrature method. Numerical results are presented for the forces and moments intensity factors, contact forces between crack faces and critical load for various geometrical and mechanical task parameters.