期刊
COMPUTERS AND GEOTECHNICS
卷 82, 期 -, 页码 157-172出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compgeo.2016.10.012
关键词
SCB specimen; Mixed-mode fracture; Crack growth trajectory; Crack initiation angle; Onset of fracture
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. (C) 2016 Elsevier Ltd. All rights reserved.
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