Effects of temperature and vacancy defects on tensile deformation of single-walled carbon nanotubes

Generation of Temperature Dependent Transversely Isotropic Properties for Zigzag and Armchair Single-Walled Carbon Nanotubes

“…Chen and Meguid [10] have, based on finite temperature atomistic continuum theory, concluded that Young's modulus of SWCNT remains approximately constant with temperature under low deformations. Similar conclusion was arrived at by Jeng et al [11] using molecular dynamics simulations. Chen et al [6] have derived the Young's modulus of (5, 5) armchair and (9, 0) zigzag SWCNTs by varying temperature from 100 to 1500 K using the modified molecular structural mechanics (MMSM) model.…”

“…The axial strain (e 3 ) and the circumferential strain (e 2 ) are determined using Eqs. (10) and (11). The axial stress (r 3 ) is obtained from Eq.…”

Structural Instability of Carbon Nanotube

“…It is also observed that the buckling kinks or bends appear mostly near the middle of the nanotubes, which indicates the loading mechanism does not impose any extra constraint on the two ends. Unlike the velocity controlled loading (Jeng et al, 2004), the drastic deformation starts from the imminent places near the ends due to Poisson's effect. Hence, it is difficult to separate the boundary constraint effect from the other investigating factors.…”

A glance on the effects of temperature on axisymmetric dynamic behavior of multiwall carbon nanotubes

“…Wang et al [3] simulated the compression deformation of CNTs under different temperatures by using the Tersoff-Brenner potential to describe the interactions in CNTs. In addition, Jeng et al [4] studied the effects of temperature and vacancy defects on tensile deformation of singlewall carbon nanotubes (SWCNTs).…”