A thermodynamical fiber bundle model for the fracture of disordered materials

Details A thermodynamical fiber bundle model for the fracture of disordered materials A thermodynamical fiber bundle model for the fracture of disordered materials

2006-11-28

arxiv.org/abs/cond-mat/0611721v1

J. Stat. Mech. (2007) P04009

Physics

Condensed Matter

Statistical Mechanics

18 pages, 10 figures

Scientific paper

10.1088/1742-5468/2007/04/P04009

We investigate a disordered version of a thermodynamic fiber bundle model proposed by Selinger, Wang, Gelbart, and Ben-Shaul a few years ago. For simple forms of disorder, the model is analytically tractable and displays some new features. At either constant stress or constant strain, there is a non monotonic increase of the fraction of broken fibers as a function of temperature. Moreover, the same values of some macroscopic quantities as stress and strain may correspond to different microscopic cofigurations, which can be essential for determining the thermal activation time of the fracture. We argue that different microscopic states may be characterized by an experimentally accessible analog of the Edwards-Anderson parameter. At zero temperature, we recover the behavior of the irreversible fiber bundle model.

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