Abstract
The maximum circumferential tensile stress theory, originally developed for isotropic solids, is extended to an anisotropic one. A two parameter fracture toughness characterization is assumed, and a simplifying relationship among them postulated. The criteria is reformulated in terms of the maximization of the ratio of the maximum circumferential tensile stress (a function of the two stress intensity factors K I and K II ) over the material critical tensile strength (which has a polar variation in terms of two fracture toughnesses). It is found that material anisotropy can strongly deviate the angle of crack extension from the one predicted by current isotropic models.
Published Version
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