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- Title
DUCTILE TEARING SIMULATION BASED ON A LOCAL ENERGETIC CRITERION.
- Authors
Marie; Chapuliot
- Abstract
It is well known that the tearing resistance curve J–Δa is not a material property and that probably the energy dissipation rate is preferable to the integral J to characterize crack growth. The G parameter represents the energy dissipated in plasticity and fracture and, under certain conditions, this parameter could be used directly as a critical value for a criterion based on an energy release rate calculated near the crack tip to simulate propagation. Indeed, we see that a local energy release rate could be calculated near the crack tip to take account only of that portion of energy which participates in the fracture. We applied this approach to simulate the crack growth for CT specimens with and without side grooves in a 20 MnMoNi 55 ferritic steel, and compared the results with Rousselier’s model.
- Subjects
ENERGY dissipation; FRACTURE mechanics
- Publication
Fatigue & Fracture of Engineering Materials & Structures, 1998, Vol 21, Issue 2, p215
- ISSN
8756-758X
- Publication type
Article
- DOI
10.1046/j.1460-2695.1998.00017.x