TY - JOUR
T1 - Implementation of a J-integral based Maximum Circumferential Tensile Stress theory in DDA for simulating crack propagation
AU - Wang, Cungen
AU - Wang, Shuhong
AU - Chen, Guangqi
AU - Yu, Pengcheng
AU - Peng, Xinyan
N1 - Funding Information:
This work was conducted with supports from the National Natural Science Foundation of China (Grant Nos.U1602232 and 51474050), the China Scholarship Council (Grant No. 201706080036). Key science and technology projects of Liaoning Province, China (2019JH2-10100035), the Fundamental Research Funds for the Central Universities (N170108029), the research and development project of China construction stock technology (CSCEC-2016-Z-20-8).
Publisher Copyright:
© 2021
PY - 2021/4/1
Y1 - 2021/4/1
N2 - Crack propagation is a very important research subject within the field of rock mechanics. In this study, a J-integral based Maximum Circumferential Tensile Stress theory was applied to the conventional Discontinuous Deformation Analysis (DDA) Method for simulating crack propagation. First, according to the relevant theories of fracture mechanics, a crack propagation theory suitable for DDA was derived by calculating J-integral in DDA simulation. Then, the crack propagation algorithm was embedded in the DDA algorithm with an accurate judgement of the propagation direction. After that, the numerical calculation results were compared with the experimental results to verify the correctness of the crack propagation algorithm. The validated method was finally applied to simulate a landslide case with a preexisting crack. The results showed that the proposed method was applicable to simulating crack propagations in practical cases.
AB - Crack propagation is a very important research subject within the field of rock mechanics. In this study, a J-integral based Maximum Circumferential Tensile Stress theory was applied to the conventional Discontinuous Deformation Analysis (DDA) Method for simulating crack propagation. First, according to the relevant theories of fracture mechanics, a crack propagation theory suitable for DDA was derived by calculating J-integral in DDA simulation. Then, the crack propagation algorithm was embedded in the DDA algorithm with an accurate judgement of the propagation direction. After that, the numerical calculation results were compared with the experimental results to verify the correctness of the crack propagation algorithm. The validated method was finally applied to simulate a landslide case with a preexisting crack. The results showed that the proposed method was applicable to simulating crack propagations in practical cases.
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U2 - 10.1016/j.engfracmech.2021.107621
DO - 10.1016/j.engfracmech.2021.107621
M3 - Article
AN - SCOPUS:85101364787
SN - 0013-7944
VL - 246
JO - Engineering Fracture Mechanics
JF - Engineering Fracture Mechanics
M1 - 107621
ER -