Mechanics of Carbon Nanotubes: A Continuum Theory Based on Interatomic Potentials |
| Journal |
Key Engineering Materials (Volumes 340 - 341) |
| Volume |
Engineering Plasticity and Its Applications |
| Edited by |
N. Ohno and T. Uehara |
| Pages |
11-20 |
| DOI |
10.4028/www.scientific.net/KEM.340-341.11 |
| Online since |
June, 2007 |
| Authors |
Han Qing Jiang,
Keh Chih Hwang,
Young Huang
|
| Keywords |
Carbon Nanotube (CNT), Continuum Theory, Interatomic Potential, Nanomechanics |
| Abstract |
It is commonly believed that continuum mechanics theories may not be applied at the
nanoscale due to the discrete nature of atoms. We developed a nanoscale continuum theory based on
interatomic potentials for nanostructured materials. The interatomic potential is directly incorporated
into the continuum theory through the constitutive models. The nanoscale continuum theory is then
applied to study the mechanical deformation and thermal properties of carbon nanotubes, including
(1) pre-deformation energy; (2) linear elastic modulus; (3) fracture nucleation; (4) defect nucleation;
(5) electrical property change due to mechanical deformation; (6) specific heat; and (7) coefficient of
thermal expansion. The nanoscale continuum theory agrees very well with the experiments and
atomistic simulations without any parameter fitting, and therefore has the potential to be utilized to
complex nanoscale material systems (e.g., nanocomposites) and devices (e.g., nanoelectronics). |
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