Estimation of Mechanical and Thermal Properties of Nanocone by using nonlinear Finite Element Method

Abstract

In this thesis mechanical and thermal properties of carbon-based nanostructures such as carbon nanotubes and carbon nanocones are investigated by using a molecular mechanics based 3D finite element (FE) analysis The proposed molecular mechanics based finite element approach links the molecular mechanics and structural mechanics and is based on simulating the covalent bonds between carbon-carbon atoms with Timoshenko beam elements The harmonic and modified Morse molecular mechanics potential functions are used for small and large deformation problems Mechanical properties (Young’s modulus shear modulus Poisson’s ratio and ultimate strength) and thermal properties (Coefficient of thermal expansion and specific heat) of carbon nanotubes and carbon nanocones are investigated by using molecular mechanics based finite element approach It is shown that the tube diameter length and chirality affects the mentioned properties and for nanocone different apex angles cone length and top radius affects the mentioned properties

Date of Award	2018 Jul 10
Original language	English
Supervisor	Chyanbin Hwu (Supervisor)