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Your search keyword '"Pacheco, A. F."' showing total 11 results
Start Over Author "Pacheco, A. F." Search Limiters Peer Reviewed Publication Year Range Last 50 years Journal physical review letters
11 results on '"Pacheco, A. F."'

11. Fracture and second-order phase transitions.

Author

Moreno Y, Gomez JB, and Pacheco AF

Abstract

Using the global fiber bundle model as a tractable scheme of progressive fracture in heterogeneous materials, we define the branching ratio in avalanches as a suitable order parameter to clarify the order of the phase transition occurring at the collapse of the system. The model is analyzed using a probabilistic approach suited to smooth fluctuations. The branching ratio shows a behavior analogous to the magnetization in known magnetic systems with second-order phase transitions. We obtain a universal critical exponent beta approximately = 0.5 independent of the probability distribution used to assign the strengths of individual fibers.

Published
2000
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