Atomistic Simulations of Nanotube Fracture

Details Atomistic Simulations of Nanotube Fracture Atomistic Simulations of Nanotube Fracture

2002-03-27

arxiv.org/abs/physics/0203086v1

Physics

Atomic and Molecular Clusters

12 pages, PDF, submitted to Phy. Rev. B

Scientific paper

10.1103/PhysRevB.65.235430

The fracture of carbon nanotubes is studied by atomistic simulations. The fracture behavior is found to be almost independent of the separation energy and to depend primarily on the inflection point in the interatomic potential. The rangle of fracture strians compares well with experimental results, but predicted range of fracture stresses is marketly higher than observed. Various plausible small-scale defects do not suffice to bring the failure stresses into agreement with available experimental results. As in the experiments, the fracture of carbon nanotubes is predicted to be brittle. The results show moderate dependence of fracture strength on chirality.

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