▎ 摘　　要

The mechanical behavior of graphene-embedded Cu matrix nanocomposites under three-point bending is investigated using the molecular dynamics (MD) simulation method. The force versus displacement (F-d) curve shows that the bending properties of the Cu matrix can be enhanced by embedding a single graphene sheet compared with the properties for a pure Cu matrix under three-point bending. The results of critical strain and stop-action atomic configuration images indicate that the graphene is the dominant factor of the excellent bending properties. From the simulation, we can also observe that the chirality of graphene has a large effect on the mechanical behavior of graphene-embedded Cu matrix nanocomposites. The critical strain and force of the graphene-embedded copper nanocomposites with zigzag direction graphene are larger than those of the nanocomposites with armchair direction graphene. However, the position of graphene has little effect on the mechanical behavior of the nanocomposites. Additionally, the simulation results show that the influence of temperature to the bending properties of graphene-embedded copper nanocomposites is not obviously.