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Dynamic Stability of Crack Fronts: Out-Of-Plane Corrugations.
- Source :
-
Physical Review Letters . 1/4/2013, Vol. 110 Issue 1, p014302-1-014302-5. 5p. - Publication Year :
- 2013
-
Abstract
- The dynamics and stability of brittle cracks are not yet fully understood. Here we use the Willis- Movchan 3D linear perturbation formalism [J. Mech. Phys. Solids 45, 591 (1997)] to study the out-of-plane stability of planar crack fronts in the framework of linear elastic fracture mechanics. We discuss a minimal scenario in which linearly unstable crack front corrugations might emerge above a critical front propagation speed. We calculate this speed as a function of Poisson's ratio and show that corrugations propagate along the crack front at nearly the Rayleigh wave speed. Finally, we hypothesize about a possible relation between such corrugations and the long-standing problem of crack branching. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00319007
- Volume :
- 110
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Physical Review Letters
- Publication Type :
- Academic Journal
- Accession number :
- 85037225
- Full Text :
- https://doi.org/10.1103/PhysRevLett.110.014302