A review of mixed mode I-II fracture criteria and their applications in brittle or quasi-brittle fracture analysis. (April 2023)

• Record Type: Journal Article
• Authors: Hua, Wen; Li, Jianxiong; Zhu, Zhanyuan; Li, Anqing; Huang, Jiuzhou; Gan, Zhiqiang; Dong, Shiming
• Is Part Of: Theoretical and applied fracture mechanics. Volume 124(2023)
• Publication Date: 2023-04
• Subjects: Linear elastic fracture mechanics -- Mixed mode I-II -- Fracture criteria -- T-stresses -- Crack initiation angle -- Fracture resistance; Fracture mechanics -- Periodicals; 620.1126
• DOI: 10.1016/j.tafmec.2022.103741
• Languages: English
• ISSNs: 0167-8442

Abstract

Highlights: Mixed mode I-II fracture criteria in LEFM and their applications are systematically reviewed and discussed. Suggestions are given to select appropriate criteria according to crack types and failure characteristics. T -stresses greatly affect the crack propagation behavior and they should be introduced into the fracture criteria. Abstract: Fracture criteria play a very important role in predicting crack propagation behavior and life evaluation of cracked bodies. In this paper, mixed mode I-II fracture criteria in the framework of linear elastic fracture mechanics and their applications in brittle or quasi-brittle fracture analysis are systematically reviewed. Meanwhile, the advantages and shortcomings of these criteria are briefly discussed. Furthermore, the effects of T -stresses on brittle fracture characteristics are also studied and some suggestions are given to select appropriate fracture criteria. The results show that different types of fracture criteria differ greatly in predicting the crack propagation behavior, and a suitable criterion can be chosen according to the crack types, loading modes and failure characteristics. Tension-based fracture criteria are applicable for the opening cracks under tensile-based failure, but not for the closed cracks under shear-based failure. T -stresses around the crack tip have significant effects on crack initiation angle, fracture resistance and crack tip plastic zone, which should be introduced into the classical fracture criteria only determined by singular terms for providing more accurate predictions. Moreover, the variable fracture process zone radius can be further considered in these modified criteria considering stress intensity factors and T -stresses, which are not only suitable for brittle materials, but also for plastic materials under small scale yielding. This review will contribute to the development of mixed mode fracture criteria.