Curvature Effects on Thermal Buckling Load of DWCNT Under Axial Compression Force

Subject Areas : Engineering

A Ghorbanpour Arani ¹ , M Mohammadimehr ² , M Ghazi ³

1 - Department of Mechanical Engineering, Faculty of Engineering, University of Kashan---- Institute of Nanoscience & Nanotechnology, University of Kashan
2 - Department of Mechanical Engineering, Faculty of Engineering, University of Kashan
3 - Department of Mechanical Engineering, Faculty of Engineering, University of Kashan

Received: 2010-12-10 Accepted : 2011-02-09 Published : 2011-03-30

Keywords: DWCNT, Curvature effect, Thermal buckling load, Small scale effect, Axial compression force,

Abstract :

In this article, curvature effects on elastic thermal buckling of double-walled carbon nanotubes under axially compressed force are investigated using cylindrical shell model. Also, the small scale effect is taken into account in the formulation. The dependence of the interlayer van der Waals (vdW) pressure on the change of the curvatures of the inner and outer tubes at that point is considered. The effects of the surrounding elastic medium, curvature and the vdW forces between the inner and outer tubes increase the critical buckling load under thermal and axial compression loads, while small scale effect decreases it.

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