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Abstract
Fracture mechanics models and criteria for bodies with cracks have been developed to analyze strains and fractures of bodies with notches and scotches. Criterion equations and corresponding crack growth resistance diagrams for a body with a notch taking into account the changes in the degree of strain constraint at the notch apex due to finiteness of its apex radius rounding and a nonsingular stress component (T-stresses) have been considered. Analytical relations for calculating the J-integral in the case of bodies with blunt U-and V-notches under elastic and plastoelastic loading have been given. Capabilities of the method of separable functions for the experimental study of plastoelastic crack growth resistance for nonstandard samples with scotches have been presented.
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