Computation of Energy Release Rates for Kinking Cracks based on Virtual Crack Closure Technique
A numerical method based on the virtual crack closure technique (VCCT) [Rybicki and Kanninen (1977)] and in conjunction with the finite element (FE) method is presented to compute strain energy release rates for cracks that kink. The method partitions the strain energy release rate and provides an e...
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| Veröffentlicht in: | Computer modeling in engineering & sciences 2004-12, Vol.6 (6), p.515-524 |
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| container_title | Computer modeling in engineering & sciences |
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| creator | Xie, De Waas, Anthony M Shahwan, Khaled W Schroeder, Jessica A Boeman, Raymond G |
| description | A numerical method based on the virtual crack closure technique (VCCT) [Rybicki and Kanninen (1977)] and in conjunction with the finite element (FE) method is presented to compute strain energy release rates for cracks that kink. The method partitions the strain energy release rate and provides an efficient means to compute values of the mode I (GI) and mode II (GII) energy release rate at the tip of a kinking crack. The solution procedure is shown to be computationally efficient and operationally simple, involving only the nodal forces and displacements near the crack tip. Example problems with kinking cracks in a homogeneous material, and a layered two constituent material are presented to illustrate the current approach. |
| doi_str_mv | 10.3970/cmes.2004.006.515 |
| format | Article |
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| source | Tech Science Press; EZB-FREE-00999 freely available EZB journals |
| subjects | Crack closure Crack tips Cracks Finite element method Heat treating Kinking Numerical methods Strain energy release rate |
| title | Computation of Energy Release Rates for Kinking Cracks based on Virtual Crack Closure Technique |
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