Abstract
Carbon nanotubes (CNTs) have been attracting attention because of their prominent
mechanical and electronic properties. In this study, we investigate the deformation of a single-walled
carbon nanotube (SWCNT) with a bend junction using atomistic modeling with Brenner potential to
analyze strain concentration caused by macroscopic tube shape and microscopic interatomic bond
structure. The simulation model consists of (8,8) and (14,0) CNTs connected with a flexion angle of
30 degrees. For geometric reasons five and seven-membered rings are introduced at the inside and
outside of the bend junction. After the structure under no external load is determined, tensile load is
applied to the model. Then, we analyze the strain concentration at the bend junction, and high tensile
strain is observed at the inside of the bend junction. The strain at the seven-membered ring at the
inside of the bend junction has higher strain compared to the neighboring rings due to the microscopic
effect.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science