Roughness of Crack Interfaces in Two-Dimensional Beam Lattices

Details Roughness of Crack Interfaces in Two-Dimensional Beam Lattices Roughness of Crack Interfaces in Two-Dimensional Beam Lattices

2000-12-19

arxiv.org/abs/cond-mat/0012344v1

Physics

Condensed Matter

9 pages, RevTeX, 3 figures

Scientific paper

10.1103/PhysRevLett.87.125503

The roughness of crack interfaces is reported in quasistatic fracture, using an elastic network of beams with random breaking thresholds. For strong disorders we obtain 0.86(3) for the roughness exponent, a result which is very different from the minimum energy surface exponent, i.e., the value 2/3. A cross-over to lower values is observed as the disorder is reduced, the exponent in these cases being strongly dependent on the disorder.

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