Fracture strength of disordered media: Universality, interactions and tail asymptotics

Details Fracture strength of disordered media: Universality, interactions and tail asymptotics Fracture strength of disordered media: Universality, interactions and tail asymptotics

2011-08-23

arxiv.org/abs/1108.4679v1

Physics

Condensed Matter

Statistical Mechanics

5 pages, 3 figures

Scientific paper

We study the asymptotic properties of fracture strength distributions of disordered elastic media by a combination of renormalization group, extreme value theory, and numerical simulation. We investigate the validity of the `weakest-link hypothesis' in the presence of realistic long-ranged interactions in the random fuse model. Numerical simulations indicate that the fracture strength is well described by the Duxbury-Leath-Beale (DLB) distribution which is shown to flow asymptotically to the Gumbel distribution. We explore the relation between the extreme value distributions and the DLB type asymptotic distributions, and show that the universal extreme value forms may not be appropriate to describe the non-universal low-strength tail.

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