Authors: M. Sadeghi, R. Naghdabadi
Addresses: 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
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.
International Journal of Nanomanufacturing, 2010 Vol.5 No.3/4, pp.366 - 375
Published online: 02 Jul 2010 *Full-text access for editors Access for subscribers Purchase this article Comment on this article