TY - JOUR
T1 - Fracture Criterion of a Mixed-Mode Crack (3rd Report, A Study on Evaluation of Fracture Paramenter CED in an Arbitrary Direction by Finite Element Method)
AU - Utsunomiya, Takao
AU - Watanabe, Katsuhiko
PY - 1993
Y1 - 1993
N2 - In the series of papers, the authors proposed the fracture criteria for mode I (opening type) fracture and mode II (shear type) fracture in a mixed-mode crack based on the CED (crack energy density) in an arbitarry direction, εφ, and the applicability of these criteria to mixed-mode crack has been investigated through the fracture experiments of specimens with an inclined crack under tensile/shear type loading. In this paper, the evaluation method of εφ by finite element method is studied. Elastic-plastic finite element analyses are carried out for the above mentioned fracture experiments and εφ and its contribution of each mode are evaluated by path-independent integrals and the method based on load-displacement curves. Based on the results, we examine the fundamental properties in the evaluation of εφ and so on in elastic case and, simultaniously, develop a practical method to evaluate εφ and so on in elastic-plastic case which makes the application of the fractrure criteria to the fracture of a mixed-mode crack realistic and easy.
AB - In the series of papers, the authors proposed the fracture criteria for mode I (opening type) fracture and mode II (shear type) fracture in a mixed-mode crack based on the CED (crack energy density) in an arbitarry direction, εφ, and the applicability of these criteria to mixed-mode crack has been investigated through the fracture experiments of specimens with an inclined crack under tensile/shear type loading. In this paper, the evaluation method of εφ by finite element method is studied. Elastic-plastic finite element analyses are carried out for the above mentioned fracture experiments and εφ and its contribution of each mode are evaluated by path-independent integrals and the method based on load-displacement curves. Based on the results, we examine the fundamental properties in the evaluation of εφ and so on in elastic case and, simultaniously, develop a practical method to evaluate εφ and so on in elastic-plastic case which makes the application of the fractrure criteria to the fracture of a mixed-mode crack realistic and easy.
KW - CED
KW - Finite Element Method
KW - Fracture Criterion
KW - Fracture Mechanics
KW - Mixed-Mode Crack
KW - Path-Independent Integral
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U2 - 10.1299/kikaia.59.1590
DO - 10.1299/kikaia.59.1590
M3 - Article
AN - SCOPUS:0027625608
VL - 59
SP - 1590
EP - 1597
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
SN - 0387-5008
IS - 563
ER -