Dynamical stability of the crack front line

Details Dynamical stability of the crack front line Dynamical stability of the crack front line

1998-07-15

arxiv.org/abs/cond-mat/9807227v2

Physics

Condensed Matter

Materials Science

14 pages, 7 figures

Scientific paper

10.1143/JPSJ.67.4064

Dynamical stability of the crack front line that propagates between two plates is studied numerically using the simple two-dimensional mass-spring model. It is demonstrated that the straight front line is unstable for low speed while it becomes stable for high speed. For the uniform model, the roughness exponent in the slower speed region is fairly constant around 0.4 and there seems to be a rough-smooth transition at a certain speed. For the inhomogeneous case with quenched randomness, the transition is gradual.

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