Wong C.H., Liew K.M., He X.Q., Tan M.J., Meguid S.A.
Nanyang Technological University, SG
Keywords: buckling, carbon nanotube, molecular dynamics, nanomechanics, simulation
Molecular dynamics simulation is performed on the buckling behavior of single and multi-walled carbon nanotubes under axial compression. Brenners second generation empirical potential is used to describe the many-body short range interatomic interactions for single-walled carbon nanotubes, while the Lennard Jones 12-6 model for van der Waals potential is added for multi-walled carbon nanotubes to describe the interlayer interactions. Results indicate that there exists an optimum diameter for single-walled nanotubes at which the buckling load Pcr reaches its maximum value. The buckling load Pcr for single-walled nanotube increases rapidly with the increase of the diameter d up to the optimum diameter. However, any further increase in the diameter d after the optimum diameter will result in a slow decline in buckling load Pcr until a steady value is reached. The buckling behavior of multi-walled nanotubes is also presented The effects of layers on the buckling load of multi-walled nanotubes are examined.
Journal: TechConnect Briefs
Volume: 3, Technical Proceedings of the 2004 NSTI Nanotechnology Conference and Trade Show, Volume 3
Published: March 7, 2004
Pages: 248 - 251
Industry sector: Advanced Materials & Manufacturing
Topic: Carbon Nano Structures & Devices
ISBN: 0-9728422-9-2