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

摘要

In this present paper, an FE approach has been presented for the elasticbending and buckling behaviors of single-walled carbon nanotubes (SWCNTs).Finite element simulations are carried out to investigate the bendingdeformations and buckling behaviors of SWCNTs under various conditions.Both axial compression and bending loading conditions are considered. Thecomputed results for SWCNTs agree well with atomistic simulations in theliterature and the FE approach is confirmed successfully. In this work, themodal and harmonic analyses have been performed to know the naturalfrequencies and frequency responses of the CNTs using shell element (She1193from ANSYS10.0 library [8]). For analyses, SWCNTs have been consideredas cantilever beams and loaded at the free end. SWCNTs with differentlengths (in nm), and different thicknesses (nm) under various conditions havebeen studied. In modal analysis, the natural frequencies and correspondingmode shapes are drawn. Further, under harmonic analysis the system responseis plotted and reported.