A nonlinear van der Waals force model for multiwalled carbon nanotubes modeled by a nested system of cylindrical shells

He, X. Q., Kitipornchai, S., Wang, C. M., Xiang, Y. and Zhou, Q. (2010) A nonlinear van der Waals force model for multiwalled carbon nanotubes modeled by a nested system of cylindrical shells. Journal of Applied Mechanics, Transactions ASME, 77 6: . doi:10.1115/1.4001859


Author He, X. Q.
Kitipornchai, S.
Wang, C. M.
Xiang, Y.
Zhou, Q.
Title A nonlinear van der Waals force model for multiwalled carbon nanotubes modeled by a nested system of cylindrical shells
Journal name Journal of Applied Mechanics, Transactions ASME   Check publisher's open access policy
ISSN 0021-8936
1528-9036
Publication date 2010
Year available 2010
Sub-type Article (original research)
DOI 10.1115/1.4001859
Open Access Status
Volume 77
Issue 6
Total pages 6
Place of publication New York, NY United States
Publisher The American Society of Mechanical Engineers
Collection year 2010
Language eng
Subject 2210 Mechanical Engineering
2211 Mechanics of Materials
3104 Condensed Matter Physics
Abstract In this paper, a more refined pressure distribution expression is derived to describe the van der Waals (vdW) interaction between any two tubes of a multiwalled carbon nanotube (MWCNT). Based on this new vdW force expression, a continuum cylindrical shell model is established for the buckling and post-buckling analysis of MWCNTs. The buckling and post-buckling responses are simulated for MWCNTs with various sizes to examine the consequences of ignoring the nonlinear term in the Taylor expansion of vdW force function. By comparing the results furnished by the commonly used linear vdW force model and the present nonlinear vdW force model, it is found that the buckling responses before the critical buckling strain are almost the same. Thus, the simple linear vdW force model suffices for the calculation of buckling loads. However, the post-buckling responses simulated from present nonlinear vdW force model are significantly lower than those given by the linear vdW force model. This indicates that the present nonlinear vdW force model must be used when considering the post-buckling responses.
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: Wed, 29 Oct 2014, 11:48:37 EST by Jeannette Watson on behalf of School of Civil Engineering