TY - JOUR
T1 - Microscopic strength distribution and growth of fracture process zone in rock
AU - Sato, Kazushi
AU - Tobina, Tadashi
AU - Himura, Naoto
AU - Hashida, Toshiyuki
AU - Takahashi, Hideaki
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 1996
Y1 - 1996
N2 - In this paper, the growth behavior of fracture process zone in rock is examined from the viewpoint of the microscopic strength distribution. Numerical calculations were performed using a network model in order to analyze the microcracking behavior which is accompanied with the crack extension. CT specimen configuration was used in the network model analysis. The network model is composed of brittle stick elements, and microscopic inhomogeneity is represented by the strength distribution of the stick elements. The calculation results show that the microcracking behavior depends on the microscopic strength distribution. The geometrical characteristic of the fracture process zone is observed to change from a distributed microcrack zone type to a localized zone type, depending on the microscopic strength distribution.
AB - In this paper, the growth behavior of fracture process zone in rock is examined from the viewpoint of the microscopic strength distribution. Numerical calculations were performed using a network model in order to analyze the microcracking behavior which is accompanied with the crack extension. CT specimen configuration was used in the network model analysis. The network model is composed of brittle stick elements, and microscopic inhomogeneity is represented by the strength distribution of the stick elements. The calculation results show that the microcracking behavior depends on the microscopic strength distribution. The geometrical characteristic of the fracture process zone is observed to change from a distributed microcrack zone type to a localized zone type, depending on the microscopic strength distribution.
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U2 - 10.1299/kikaia.62.2547
DO - 10.1299/kikaia.62.2547
M3 - Article
AN - SCOPUS:0030289858
SN - 0387-5008
VL - 62
SP - 2547
EP - 2552
JO - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
JF - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
IS - 603
ER -