Paper Title:
Mesh-Free Numerical Simulation for Carbon Nanotubes upon Bending
  Abstract

This paper presents a mesh-free numerical modeling approach for carbon nanotubes (CNTs) subjected to bending loads. The higher-order Cauchy-Born rule was employed to construct the higher-order continuum constitutive model. An initial equilibrium single-walled CNT (SWCNT) was viewed as been formed by rolling up a graphite sheet into a cylindrical shape. The deformation from an original SWCNT to the current configuration was approximated with the moving least-square (MLS) approximation, and the mesh-free computational framework was established in the theoretical scheme of higher-order gradient continuum. Mesh-free numerical simulations were carried out for SWCNTs, and the accuracy and convergence were discussed in comparison with the results of atomistic simulation. The buckling behavior was studied for various types of SWCNTs upon bending, and the buckling mechanism was investigated in virtue of the continuum variables, which showed that the maximum axial compressive strain played a vital role in the development of kinking.

  Info
Periodical
Advanced Materials Research (Volumes 139-141)
Edited by
Liangchi Zhang, Chunliang Zhang and Tielin Shi
Pages
17-21
DOI
10.4028/www.scientific.net/AMR.139-141.17
Citation
B. Gao, Y. Z. Sun, J. B. Wang, "Mesh-Free Numerical Simulation for Carbon Nanotubes upon Bending", Advanced Materials Research, Vols. 139-141, pp. 17-21, 2010
Online since
October 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Fatemeh Farhatnia, Mohammad Ali Bagheri, Amin Ghobadi
Chapter 12: Computer-Aided Design, Manufacturing and Engineering
Abstract:In this paper, buckling analysis of functionally graded (FG) thick beam under different conditions is presented. Based on the first order...
4920
Authors: Cai Ru Zhen, Yu Li Chen, Chuan Qiao, Qi Jun Liu
Chapter 2: Low-Dimensional and Nano-Materials
Abstract:The buckling behavior of monolayer graphene sheets with simple-supported, clamped-free and clamped-clamped boundary conditions is...
35