Title: Stability analysis of carbon nanotubes using a hybrid atomistic-structural element
Author: M. Sadeghi, R. Naghdabadi
Department of Mechanical Engineering, Sharif University of Technology, P.O. Box: 14588-89694, Tehran, Iran.
Department of Mechanical Engineering; and Institute for Nano Science and Technology, Sharif University of Technology, P.O. Box: 14588-89694, Tehran, Iran
Journal: Int. J. of Nanomanufacturing, 2010 Vol.5, No.3/4, pp.366 - 375
Abstract: In this paper, a hybrid atomistic-structural element for studying the mechanical behaviour of carbon nanotubes is introduced. Non-linear formulation for this element is derived based on empirical inter-atomic potentials. This hybrid element is capable of taking into account the non-linear nature of inter-atomic forces as well as the non-linearity arising from large deformations. Using these capabilities, the stability analysis of carbon nanotubes under axial compressive loading is performed and the post-buckling behaviour is predicted. Also, the dependence of axial buckling force on nanotube radius is shown.
Keywords: carbon nanotubes; CNTs; inter-atomic potential; large deformations; stability; post-buckling; hybrid-atomistic-structural elements; stability analysis; nanotechnology; axial buckling.