Buckling properties of carbon nanotubes under hydrostatic pressure
J. Appl. Phys. 106, 084310 (2009); doi:10.1063/1.3246794
Published 21 October 2009
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An elastic continuum mechanics model is presented to study the elastic buckling of single- and double-walled carbon nanotubes (CNTs) subjected to hydrostatic pressure. It is shown that a pressure-induced instability can occur in CNTs when a circle cross-section of the CNTs is destroyed. In this paper, we investigate the effects of deformation modes and dimension of CNTs on their mechanical stability. The results show that the critical pressure depends largely on the buckling mode, the diameter and aspect ratio of CNTs. The critical pressure of the single-walled CNTs (SWCNTs) with a diameter 1.3 nm is about 1.6 GPa, which is in excellent agreement the results reported in the relative literatures. The critical pressure of the double-walled nanotubes (DWCNTs) with a diameter of 2.2 nm will increase by 26%, compared with that of an identical diameter SWCNT.
©2009 American Institute of Physics
| History: | Received 5 July 2009; accepted 20 September 2009; published 21 October 2009 |
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http://link.aip.org/link/?JAPIAU/106/084310/1 |
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