In 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.

中文翻译：

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混合模式 I/II 加载条件下 V 形缺口脆性断裂预测 MES 准则的开发

在本文中，开发了一种新的脆性断裂准则来预测尖锐 V 形缺口中的断裂。该标准通过定义一个称为“V 形缺口有效应力”的量，除切向应力外还考虑了剪切应力的影响。初始裂纹准则为制定该准则奠定了基础，它在整个混合模式 I/II 加载条件范围内对广泛的脆性材料产生了显着的结果。这一发展有助于采用 V 形槽口的新标准，能够在混合模式 I/II 负载条件的整个范围内使用。将其他两个有效标准和多个实验结果的结果与开发的标准结果进行比较以对其进行验证。发展的标准'