Crack propagation as a free boundary problem

Details Crack propagation as a free boundary problem Crack propagation as a free boundary problem

2006-07-10

arxiv.org/abs/cond-mat/0607239v1

Physics

Condensed Matter

Materials Science

Scientific paper

A newly developed sharp interface model describes crack propagation by a phase transition process. We solve this free boundary problem numerically and obtain steady state solutions with a self-consistently selected propagation velocity and shape of the crack, provided that elastodynamic effects are taken into account. Also, we find a saturation of the steady state crack velocity below the Rayleigh speed, tip blunting with increasing driving force and a tip splitting instability above a critical driving force.

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