631 Automatic crack analysis system using tetrahedral finite element and virtual crack closure-integral method

2007 ◽  
Vol 2007 (0) ◽  
pp. 487-488
Author(s):  
Yasuyuki KANDA ◽  
Kohei MUROTANI ◽  
Hiroshi OKADA ◽  
Hiroshi KAWAI ◽  
Toshimitsu FUJISAWA ◽  
...  
Keyword(s):  
Finite Element ◽  
Crack Closure ◽  
Integral Method ◽  
Crack Analysis ◽  
Analysis System

On Mixed Mode Crack Propagation Analysis Based on VCCM (Virtual Crack Closure-Integral Method) for Tetrahedral Finite Element

2010 ◽  
Author(s):  
Hiroshi Okada ◽  
Hiroshi Kawai ◽  
Takashi Tokuda ◽  
Yasuyoshi Fukui
Keyword(s):  
Finite Element ◽  
Crack Propagation ◽  
Crack Closure ◽  
Integral Method ◽  
Three Dimensional ◽  
Finite Element Program ◽  
Propagation Analysis ◽  
Element Program ◽  
Analysis System ◽  
Automatic Mesh

The authors have been developing a crack propagation analysis system that can model arbitrary shaped cracks in three-dimensional solids. In the system, automatic mesh generation program, parallel/large finite element program (ADVENTURE_Solid) and virtual crack closure-integral method (VCCM) for the quadratic tetrahedral finite element are used as its key-components. In this paper, the components in the crack propagation system are briefly described and some demonstration problems are presented for an illustrative purposes.

scholarly journals A Virtual Crack Closure-Integral Method for Generalized Finite Element with Drilling and Strain Degrees of Freedoms

2009 ◽  
Vol 3 (1) ◽  
pp. 303-314 ◽  
Author(s):  
Yasuyuki KANDA ◽  
Hiroshi OKADA ◽  
Shigeo IRAHA ◽  
Jun TOMIYAMA ◽  
Genki YAGAWA
Keyword(s):  
Finite Element ◽  
Crack Closure ◽  
Integral Method ◽  
Generalized Finite Element

Fully Automated Mixed Mode Crack Propagation Analyses Using VCCM (Virtual Crack Closure-Integral Method) for Tetrahedral Finite Element

2011 ◽  
Vol 462-463 ◽  
pp. 900-905 ◽  
Author(s):  
Hiroshi Okada ◽  
Hiroshi Kawai ◽  
Takashi Tokuda ◽  
Yasuyoshi Fukui
Keyword(s):  
Finite Element ◽  
Stress Intensity ◽  
Fracture Mechanics ◽  
Crack Propagation ◽  
Crack Closure ◽  
Stress Intensity Factors ◽  
Integral Method ◽  
Large Scale ◽  
Intensity Factors ◽  
Element Analysis

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, a Virtual Crack Closure-Integral Method (VCCM) for the second-order tetrahedral finite element is adopted and is included in the fracture mechanics module. The rate and direction of crack propagation are predicted using appropriate formulae based on the stress intensity factors.

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