Effect of strain rate on the buckling behavior of single- and double-walled carbon nanotubes

Zhang, Y. Y., Tan, V. B. C. and Wang, C. M. (2007) Effect of strain rate on the buckling behavior of single- and double-walled carbon nanotubes. Carbon, 45 3: 514-523. doi:10.1016/j.carbon.2006.10.020


Author Zhang, Y. Y.
Tan, V. B. C.
Wang, C. M.
Title Effect of strain rate on the buckling behavior of single- and double-walled carbon nanotubes
Journal name Carbon   Check publisher's open access policy
ISSN 0008-6223
1873-3891
Publication date 2007-03-01
Year available 2006
Sub-type Article (original research)
DOI 10.1016/j.carbon.2006.10.020
Open Access Status Not yet assessed
Volume 45
Issue 3
Start page 514
End page 523
Total pages 10
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Language eng
Abstract Molecular dynamics simulations are performed on single- (SWCNTs) and double-walled carbon nanotubes (DWCNTs) to investigate the effects of strain rate on their buckling behavior. The Brenner's second-generation reactive empirical bond order and Lennard-Jones 12-6 potentials are used to describe the short range bonding and long range van der Waals atomic (vdW) interaction within the carbon nanotubes, respectively. The sensitivity of the buckling behavior with respect to the strain rate is investigated by prescribing different axial velocities to the ends of the SWCNTs and DWCNTs in the compression simulations. In addition, the effects of vdW interaction between the walls of the DWCNTs on their buckling behavior are also examined. The simulation results show that higher strain rates lead to higher buckling loads and buckling strains for both SWCNTs and DWCNTs. A distinguishing characteristic between SWCNTs and DWCNTs is that the former experiences an abrupt drop in axial load whereas the axial load in latter decreases over a finite, albeit small, range of strain after buckling initiates. The buckling capability of DWCNT is enhanced in the presence of vdW interaction. DWCNTs can sustain a higher strain before buckling than SWCNTs of similar diameter under otherwise identical conditions.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Civil Engineering Publications
 
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Created: Mon, 16 Jan 2017, 21:35:41 EST by Clare Nelson on behalf of Learning and Research Services (UQ Library)