Influence of the V acancies on the B uckling B ehavior of a Single – Layered G raphene N anosheet

Abstract

Graphene is a new class of two -dimensional carbon nanostructure, which holds <br><br>great promise for the vast applications in many technological fields. It would be <br><br>one of the prominent new materials for the next generation nano-electronic <br><br>devices. In this paper the influence of various vacancy defects on the critical <br><br>buckling load of a single -layered graphene nanosheet is investigated. The <br><br>nanoshe et is modeled on the base of structural mechanics approach which covalent <br><br>bonds between atoms are modeled as equivalent beam elements in a finite element <br><br>model. The mechanical properties of the nanosheet extracted from the model are in <br><br>good agreement with those of other research works. Effect of the number of <br><br>vacancies and their positions on the critical buckling load is investigated in the <br><br>present work. Our results show that the location of the vacancy has a significant <br><br>role in the amount of critical buckling load. Furthermore, as the density of the <br><br>vacancies increases, the value of critical buckling load decreases and the <br><br>relationship is approximately linear.