Abstract

Now, many specialists and scholars have used atomistic models and continuum models to investigate mechanical behaviors of carbon nanotube about axially compressed buckling.But the studies on axially compressed buckling were mostly theoretic analysis. This work focused on compressive buckling of carbon nanotube plated with nickel in axial movement. In this work, when carbon nanotubes (CNTs) were coated with nickel, mechanical properties of CNTs were discussed. Buckling behavior of single-walled carbon nanotube under the condition of axial compression was defined by the method of molecular dynamics. Then the influence of the nickel on the properties of CNTs could be estimated. In this work, two different situations were considered, which included naked single-walled carbon nanotube (SWCNT) and SWCNT with nickel atoms coated on the surface of SWCNT (SWCNT-Ni). To define the temperature effect, two different models of SWCNT and SWCNT-Ni were analyzed at 300K, 500K and 700K respectively. Then it could be found that the SWCNT was more unstable than SWCNT with nickel atoms at the same temperature, and the deformation of SWCNT-Ni was slower. However, the stiffness of SWCNT was much more than that of SWCNT-Ni.

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