Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2004-06-19
Phys. Rev. E 72, 026111 (2005)
Physics
Condensed Matter
Statistical Mechanics
7 pages and 7 figures
Scientific paper
10.1103/PhysRevE.72.026111
Presence of lower cutoff in fiber threshold distribution may affect the failure properties of a bundle of fibers subjected to external load. We investigate this possibility both in a equal load sharing (ELS) fiber bundle model and in local load sharing (LLS) one. We show analytically that in ELS model, the critical strength gets modified due to the presence of lower cutoff and it becomes bounded by an upper limit. Although the dynamic exponents for the susceptibility and relaxation time remain unchanged, the avalanche size distribution shows a permanent deviation from the mean-fiels power law. In the LLS model, we analytically estimate the upper limit of the lower cutoff above which the bundle fails at one instant. Also the system size variation of bundle's strength and the avalanche statistics show strong dependence on the lower cutoff level.
Hansen Angela
Pradhan Srutarshi
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