Deformations and Tensile Fracture of Carbon Nanotubes Based on the Numerical Homogenization

M. Chwał Cracow University of Technology, Institute of Machine Design, 31-864 Cracow, Poland

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The existence of defects in nanostructures has a significant influence on their mechanical properties. A nonlinear finite element model of single-walled carbon nanotube without and with atom vacancy defects is presented. The numerical efficient formulation for carbon nanotubes is discussed considering the geometry, together with a finite element discretization, including the atomic potential. The effective mechanical properties are evaluated based on the homogenization theory. The results for pristine and defective single-walled carbon nanotube are presented in the form: of stress-strain curves. Vacancy defects noticeably reduce the failure stresses and failure strains.

DOI: 10.12693/APhysPolA.131.440 PACS numbers: 62.25.+g