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Published on: February 5, 2017
Mechanical behaviors of carbon nanotubes with randomly located vacancy defects
1Department of Mechanical and Industrial Engineering, The University of Iowa, Iowa City, IA 52242, USA.
Abstract:
In this paper, (10, 0) zigzag nanotubes and (6, 6) armchair nanotubes are considered to investigate the effects of randomly distributed vacancy defects on mechanical behaviors of single-walled carbon nanotubes. A spatial Poisson point process is employed to randomly locate vacancy defects on nanotubes. Atomistic simulations indicate that the presence of vacancy defects result in reducing nanotube strength but improving nanotube bending stiffness. In addition, the studies of nanotube torsion indicate that vacancy defects prevent nanotubes from being utilized as torsion springs.
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