Mixed mode fracture analysis of semi-circular bend (SCB) specimen: A numerical study based on extended finite element method |
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| Institution: | 1. Mining Engineering Department, Sahand University of Technology, Tabriz, Iran;2. Mechanical Engineering Department, Sahand University of Technology, Tabriz, Iran;3. Civil Engineering Department, Sahand University of Technology, Tabriz, Iran;1. Welding and Joining Research Center, School of Industrial Engineering, Iran University of Science and Technology (IUST), Narmak, 16846-13114 Tehran, Iran;2. Department of Civil Engineering, Iran University of Science and Technology (IUST), Narmak, 16846-13114 Tehran, Iran;1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, China;2. Department of Engineering Mechanics, College of Petroleum Engineering, China University of Petroleum, Beijing, China |
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| Abstract: | 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. |
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| Keywords: | SCB specimen Mixed-mode fracture Crack growth trajectory Crack initiation angle Onset of fracture |
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