Development of the MES criterion for brittle fracture prediction in V‐shaped notches under mixed mode I/II loading conditions

Abstract

AbstractIn this paper, a new brittle fracture criterion was developed to predict the fracture in sharp V‐shaped notches. This criterion, by defining a quantity called “V‐shaped notch effective stress,” takes into account the effect of the shear stress in addition to the tangential stress. The initial crack criterion, which lays the foundation for developing this criterion, has yielded remarkable results for a broad spectrum of brittle materials in the entire range of mixed‐mode I/II loading conditions. This development helps to employ a novel criterion for V‐shaped notches with the capability of being used in the entire range of mixed‐mode I/II loading conditions. The outcomes of the two other valid criteria and multiple experimental results were compared with the developed criterion results to validate it. The developed criterion's predicted results revealed a strong correlation with experimental results, particularly in conditions where mode II loading was predominant.