Brittle Crack Roughness in Three-Dimensional Beam Lattices

Details Brittle Crack Roughness in Three-Dimensional Beam Lattices Brittle Crack Roughness in Three-Dimensional Beam Lattices

2005-05-25

arxiv.org/abs/cond-mat/0505633v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages and 6 figures

Scientific paper

The roughness exponent is reported in numerical simulations with a three-dimensional elastic beam lattice. Two different types of disorder have been used to generate the breaking thresholds, i.e., distributions with a tail towards either strong or weak beams. Beyond the weak disorder regime a universal exponent of 0.59(1) is obtained. This is within the range 0.4-0.6 reported experimentally for small scale quasi-static fracture, as would be expected for media with a characteristic length scale.

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