ForbiddenDirections for the Fracture of ThinAnisotropic Sheets : AnAnalogywith theWulff Plot

@inproceedings{Takei2013ForbiddenDirectionsFT,
  title={ForbiddenDirections for the Fracture of ThinAnisotropic Sheets : AnAnalogywith theWulff Plot},
  author={Atsushi Takei and Benoı̂t Roman and Jos{\'e} Bico and Eugenio Hamm and Francisco de B. Melo},
  year={2013}
}
It is often postulated that quasistatic cracks propagate along the direction allowing fracture for the lowest load. Nevertheless, this statement is debated, in particular for anisotropic materials. We performed tearing experiments in anisotropic brittle thin sheets that validate this principle in the case of weak anisotropy. We also predict the existence of forbidden directions and facets in strongly anisotropic materials, through an analogy with the description of equilibrium shapes in… CONTINUE READING