▎ 摘　　要

By using molecular dynamics (MD) method, the axial tension of straight-30 degrees-helical-and 60 degrees-helical-graphene nanoribbons encapsulated in single-walled carbon nanotubes (GNR@SWNTs) is simulated, and the thermal conductivity is calculated. According to the obtained results, the tensile properties and the thermal conductivity of the three GNR@SWNTs are discussed by comparing with those of (10, 10) SWNT. It is shown that (1) the straight-GNR@SWNT has much better loading-support capability than the (10, 10) SWNT, and the 60 degrees-helical-GNR@SWNT has the comparable one to the (10, 10) SWNT and (2) the thermal conductivity of the straight-GNR@SWNT is about 2.2 times that of the (10, 10) SWNT, the 30 degrees-helical-GNR@SWNT is about 1.5 times and the 60 degrees-helical-GNR@SWNT is only about 1.23 times.