Published 6 issues per year
ISSN Print: 1543-1649
ISSN Online: 1940-4352
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BUCKLING ANALYSIS OF CURVED NANOTUBE STRUCTURES BASED ON THE NONLOCAL SHELL THEORY
ABSTRACT
In reality, nanotubes are not straight. In the present work, the buckling behavior of curved single-walled nanotubes (SWNTs), double-walled nanotubes (DWNTs) and multi-walled nanotubes (MWNTs) under axial compression is studied. The buckling analysis for the curved nanotube structures is performed by applying a nonlocal shell theory based on the constitutive relations of Eringen. The governing equations of curved SWNTs, DWNTs and MWNTs are developed. Solutions are obtained using Fourier series expansion. The effects of the curved nanotube length, bend angle, diameter and nonlocal parameter on the buckling loads are investigated. The numerical results indicate that the nonlocal parameter is important for the buckling analysis of curved nanotube structures.