The Attitude of Variation of Elastic Modules in Single Wall Carbon Nanotubes: Nonlinear Mass-Spring Model

Subject Areas : Engineering

A.R Golkarian ¹ , M Jabbarzadeh ²

1 - Department of Mechanical Engineering, Mashhad branch, Islamic Azad University
2 - Department of Mechanical Engineering, Mashhad branch, Islamic Azad University

Received: 2012-01-17 Accepted : 2012-03-29 Published : 2012-03-30

Keywords: Carbon nanotubes, Elastic modules, Non-linear spring, Morse potential,

Abstract :

The examination of variation of elastic modules in single wall carbon nanotubes (SWCNTs) is the aim of this paper. Full nonlinear spring-like elements are employed to simulate specific atomic structures in the commercial code ABAQUS. Carbon atoms are attached to each node as a mass point using atomic mass of carbon atoms. The influence of dimensions such as variation of length, diameter, aspect ratio and chirality is explored separately on the variations of young's and shear modules. It is observed that the effect of dimensions after a critical aspect ratio in nanotubes is negligible. Also, the influence of chirality on the elastic modules for same dimensions is observable. The results are compared with experimental results and theoretical data.

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