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A virtual crack closure-integral method (VCCM) to compute the energy release rates and stress intensity factors based on quadratic tetrahedral finite elements |
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| Authors: | Hiroshi Okada Hiroshi Kawai |
| Affiliation: | a Department of Nano-structure and Advanced Materials, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan b Department of System Design Engineering, Keio University, 3-14-1 Hiyoshi, Kohokuku, Yokohama 233-0051, Japan |
| Abstract: | This paper proposes a new virtual crack closure-integral method (VCCM) for quadratic tetrahedral finite element to compute the energy release rates/stress intensity factors. The formulations, numerical implementations and some numerical results of proposed VCCM are presented in this paper. Proposed VCCM enables us to adopt the tetrahedral finite element in 3D crack problems and us to use automatic mesh generation programs. Therefore process time to perform 3D crack analysis drastically reduces compared with the case of hexahedral elements. |
| Keywords: | Metals Finite element analysis Fracture mechanics Stress intensity factors Surface flaw Aerospace vehicles Marine structures Power plants Energy release rates Crack Tetrahedral finite element Virtual crack closure-integral method (VCCM) |
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