Fully automated mixed mode crack propagation analyses based on tetrahedral finite element and VCCM (virtual crack closure-integral method) |
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| Affiliation: | 1. Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan;2. University of Tokyo, 7-3-1 Hongo, Bunkyoku, Tokyo 113-8656, Japan;3. Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan;1. Institute of Engineering Thermophysics, Chinese Academy of Science, Beijing 100190, China;2. University of Chinese Academy of Science, Beijing 100049, China;1. Tokyo University of Science, Japan;2. Insight, Inc., Japan;3. The University of Tokyo, Japan;4. Tokyo University of Science, Suwa, Japan;1. Department of Civil and Environmental Engineering, National University of Singapore, Singapore;2. Department of Mechanical Engineering, Indian Institute of Technology Ropar, Punjab, India;3. Faculty of Aerospace Engineering, Delft University of Technology, Netherlands |
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| Abstract: | The authors have been developing a crack propagation analysis system that can deal with arbitrary shaped cracks in three-dimensional solids. The system is consisting of mesh generation software, a large-scale finite element analysis program and a fracture mechanics module. To evaluate the stress intensity factors, virtual crack closure-integral method (VCCM) for the quadratic tetrahedral finite element is adopted and is included in the fracture mechanics module. The rate and direction of crack propagation are predicted by using appropriate formulae based on the stress intensity factors. In this paper, the crack propagation system is briefly described and some numerical results are presented. |
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