Abstract
Intersonic crack propagation is found to exhibit essentially the same features in orthotropic and isotropic materials, provided that the crack propagates along a plane of elastic symmetry. Thus the stress and strain singularity at the crack edge is weaker than the inverse square root singularity in the sub-Rayleigh case, except at one distinct velocity. The energy flux into the process region is determined by using the Barenblatt model. It depends on the crack velocity and on the size of the process region, approaching zero with this size.
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Broberg, K. Intersonic Crack Propagation in an Orthotropic Material. International Journal of Fracture 99, 1–11 (1999). https://doi.org/10.1023/A:1018324530191
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DOI: https://doi.org/10.1023/A:1018324530191