Abstract
We revisit in a 2d setting the notion of energy release rate, which plays a pivotal role in brittle fracture. Through a blow-up method, we extend that notion to crack patterns which are merely closed sets connected to the crack tip. As an application, we demonstrate that, modulo a simple meta-stability principle, a moving crack cannot generically kink while growing continuously in time. This last result potentially renders obsolete in our opinion a longstanding debate in fracture mechanics on the correct criterion for kinking.
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Communicated by A. Mielke.
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Chambolle, A., Francfort, G.A. & Marigo, JJ. Revisiting Energy Release Rates in Brittle Fracture. J Nonlinear Sci 20, 395–424 (2010). https://doi.org/10.1007/s00332-010-9061-2
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DOI: https://doi.org/10.1007/s00332-010-9061-2
Keywords
- Brittle fracture
- Energy release rate
- Variational methods
- Blow-up technique
- Crack kink
- Stability criterion