Abstract
ABSTRACTBent and straight hetero-junction carbon nanotubes and their constructive homogeneous tubes were modeled based on the finite element method in their perfect and atomically defective forms with silicon impurities and carbon vacancies, and their buckling behavior was investigated. The results showed that the buckling strength of hetero-junction carbon nanotubes, which depends on the size of their kink and their constructive tubes' diameters, lies in the range of their constructive tubes' buckling strength. Armchair-armchair and zigzag-zigzag models also demonstrated higher buckling strength than the other hetero-junction models. Finally, the atomic defects were seen to considerably decrease the buckling strength of these nanomaterials.
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