Mixed mode fracture analysis of semi-circular bend (SCB) specimen: A numerical study based on extended finite element method
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- 作者：Yousheng Xie ; yousheng_xie@163.com ; Ping Cao ; Jin Jin ; Min Wang
- 关键词：SCB specimen ; Mixed-mode fracture ; Crack growth trajectory ; Crack initiation angle ; Onset of fracture
- 刊名：Computers and Geotechnics
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：82
- 期：Complete
- 页码：157-172
- 全文大小：3277 K
- 卷排序：82
文摘
Previous studies are mainly concentrated on the use of the semi-circular bend (SCB) specimen for determining the entire mixed-mode I-II fracture toughness of rock, while less attention has been paid to its mixed-mode fracture process. In this situation, this study investigated mixed-mode fracture behavior of the SCB specimen using the extended finite element method (X-FEM). The crack growth trajectory, crack initiation angle and onset of fracture were discussed in detail. This paper is expected to provide a better understanding of mixed-mode fracture process of the SCB specimen occurring during fracture initiation and propagation.