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Journal of Nanomaterials
Volume 2011, Article ID 297902, 6 pages
Research Article

Influence of Boundary Conditions and Defects on the Buckling Behavior of SWCNTs via a Structural Mechanics Approach

1Department of Engineering, Islamic Azad University, Shahrood Branch, 3619943189 Shahrood, Iran
2Department of Mechanical Engineering, Shahrood University of Technology, Daneshgah Boulevard, 36199955161 Shahrood, Iran
3Young Researchers Club, Islamic Azad University, Mashhad Branch, 9186854693 Mashhad, Iran

Received 5 January 2011; Accepted 16 March 2011

Academic Editor: Daniel Lu

Copyright © 2011 Vali Parvaneh et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The effects of boundary conditions and defects on the buckling behavior of SWCNTs are investigated using a structural mechanics model. Due to the application of carbon nanotubes in different fields such as NEMS, where they are subjected to different loading and boundary conditions, an investigation of buckling behavior of nanotubes with different boundary conditions is necessary. Critical buckling loads and the effects of vacancy and Stone-Wales defects were studied for zigzag and armchair nanotubes with various boundary conditions and aspect ratios (length/diameter). The comparison of our results with those of the buckling of shells with cutouts indicates that vacancy defects in carbon nanotubes can most likely be modeled as cutouts of the shells. Finally, a hybrid vacancy defect and Stone-Wales defect are also developed, and their effect on the critical buckling loads is studied.