• 文献标题:   Effect of defect guided out-of-plane deformations on the mechanical properties of graphene
  • 文献类型:   Article, Early Access
  • 作  者:   SAGAR TC, CHINTHAPENTA V, HORSTEMEYER MF
  • 作者关键词:   young s modulu, ultimate tensile strength, stonewales defect, 2dmaterial, reaxff c2013
  • 出版物名称:   FULLERENES NANOTUBES CARBON NANOSTRUCTURES
  • ISSN:   1536-383X EI 1536-4046
  • 通讯作者地址:   IIT Hyderabad
  • 被引频次:   0
  • DOI:   10.1080/1536383X.2020.1813720 EA AUG 2020
  • 出版年:  

▎ 摘  要

In this paper, nanoscale mechanical properties and failure behavior of graphene with Stone-Wales defect concentration were investigated using molecular dynamics simulations with the latest ReaxFF(C-2013)potential that can accurately capture bond breakages of graphitic compounds. The choice of interatomic potential plays an essential role in capturing the deformation mechanism accurately. Stable configuration of two-dimensional graphene experiences out-of-plane deformation leading to ripples and wrinkles in graphene. It is observed that the mechanical properties such as Young's modulus, ultimate tensile strength, and the fracture strain are dependent on the out-of-plane deformation, temperature, defect concentration, defect orientation, defect layout and loading configuration. It is observed that the post transient phase non-homogenous ripples and wrinkles influence the mechanical properties at low and high defect concentrations, respectively.