Slip avalanches in a fiber bundle model

Details Slip avalanches in a fiber bundle model Slip avalanches in a fiber bundle model

2010-10-19

arxiv.org/abs/1010.3917v1

Europhys. Lett. 89, 26008 (2010)

Physics

Condensed Matter

Disordered Systems and Neural Networks

6 pages, 6 figures

Scientific paper

10.1209/0295-5075/89/26008

We study slip avalanches in disordered materials under an increasing external load in the framework of a fiber bundle model. Over-stressed fibers of the model do not break, instead they relax in a stick-slip event which may trigger an entire slip avalanche. Slip avalanches are characterized by the number slipping fibers, by the slip length, and by the load increment, which triggers the avalanche. Our calculations revealed that all three quantities are characterized by power law distributions with universal exponents. We show by analytical calculations and computer simulations that varying the amount of disorder of slip thresholds and the number of allowed slips of fibers, the system exhibits a disorder induced phase transition from a phase where only small avalanches are formed to another one where a macroscopic slip appears.

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