Simulation Studies on Dynamic Response of Single-Walled Carbon Nanotubes under Bending-buckling Loads - an FEA Approach

Pandu, Ratnakar; Reddy, P. Ravinder; Gupta, A. V. S. S. K. S.; Rao, G. K. M.
December 2009
International Journal of Nanotechnology & Applications;2009, Vol. 3 Issue 3, p49
Academic Journal
In this present paper, an FE approach has been presented for the elastic bending and buckling behaviors of single-walled carbon nanotubes (SWCNTs). Finite element simulations are carried out to investigate the bending deformations and buckling behaviors of SWCNTs under various conditions. Both axial compression and bending loading conditions are considered. The computed results for SWCNTs agree well with atomistic simulations in the literature and the FE approach is confirmed successfully. In this work, the modal and harmonic analyses have been performed to know the natural frequencies and frequency responses of the CNTs using shell element (Shell93 from ANSYS10.0 library [8]). For analyses, SWCNTs have been considered as cantilever beams and loaded at the free end. SWCNTs with different lengths (in nm), and different thicknesses (nm) under various conditions have been studied. In modal analysis, the natural frequencies and corresponding mode shapes are drawn. Further, under harmonic analysis the system response is plotted and reported.


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