▎ 摘　　要

The main objective of the present study is improvement of the mechanical property estimation of epoxy nanocomposites (NCs) reinforced by defective graphene sheets (GS). For this purpose, the mechanical properties of a defect-free GS are initially determined using FEM. Then, some well-known defects are incorporated into the computational model to establish a realistic computational model. In addition, the finite element analyses of a NC reinforced by such defective GSs are conducted using Full Continuum and semi-continuum FE models. In this regard, the multi-scale method is used to model the perfect bonds between carbon atoms and the surrounding matrix. Also, the influences of the interphase layer and defective GSs on NC properties are investigated. Finally, the effects of some basic parameters such as the weight fractions and the length of GSs on the mechanical properties are examined. (C) 2018 Society of Plastics Engineers