American Journal of Applied Sciences

A COSSERAT-TYPE PLATE THEORY AND ITS APPLICATION TO CARBON NANOTUBE MICROSTRUCTURE

Abdellatif Selmi, Hedi Hassis, Issam Doghri and Hatem Zenzri

DOI : 10.3844/ajassp.2014.1255.1273

American Journal of Applied Sciences

Volume 11, Issue 8

Pages 1255-1273

Abstract

The predictive capabilities of plate and shell theories greatly depend on their underlying kinematic assumptions. In this study, we develop a Cosserat-type elastic plate theory which accounts for rotations around the normal to the mid-surface plane (so-called drilling rotations). Internal loads, equilibrium equations, boundary conditions and constitutive equations are derived. The case of a Single Walled carbon Nanotube (SWNT) modelled as a Cosserat medium is taken here as a reference example. Material parameters are identified and the proposed theory is used to solve analytically the problem of a polymer-SWNT composite tube under torsion. Predictions such as an absolute size effect are compared to those of the classical Cauchy-de Saint-Venant results.

Copyright

© 2014 Abdellatif Selmi, Hedi Hassis, Issam Doghri and Hatem Zenzri. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.