The stress–strain state of an unbounded linear viscoelastic isotropic body weakened by collinear cracks of equal length and subjected to a time-independent load normal to the cracks is studied. The expression for the crack opening displacement in the nonlinear range that is derived based on the Leonov–Panasyuk–Dugdale model is used to deduce the equations of subcritical crack growth. A numerical algorithm for solving them is presented. The solutions of the equations describing subcritical crack growth are analyzed in determining the duration of the initial crack growth period. The numerical results are presented as graphs and tables
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Translated from Prikladnaya Mekhanika, Vol. 50, No. 3, pp. 94–106, May–June 2014.
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Kaminsky, A.A., Selivanov, M.F. & Chernoivan, Y.A. Initial Fracture of a Viscoelastic Isotropic Plate with Two Collinear Cracks of Equal Length. Int Appl Mech 50, 310–320 (2014). https://doi.org/10.1007/s10778-014-0634-x
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DOI: https://doi.org/10.1007/s10778-014-0634-x