The asymptotic distribution of ultimate strength of single-walled carbon nanotubes using atomistic simulation
作者： Baidurya Bhattacharya , Qiang Lu
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摘要: This paper models the effects of randomly distributed Stone-Wales (SW) defects on asymptotic distribution ultimate strength single-walled nanotubes (SWNTs) using technique atomistic simulation (AS). A Matern hard-core random field applied a finite cylindrical surface is used to describe spatial defects. We simulate set displacement controlled tensile loading up fracture SWNTs with (6,6) armchair configuration and aspect ratios between 6.05 36.3. modified Morse potential adopted model interatomic forces. SWNT calculated from simulated force time histories. The found shift left become narrower increasing tube length, l, appears fit Weibull rather well. extremal index, measuring stochastic dependence in field, estimated. stiffness are be asymptotically uncorrelated.
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