Deformation and Fracture Mechanisms in Single-walled Carbon Nanotube/silicon Nanocomposites Based on Molecular Dynamics Analysis

摘要

To understand deformation and fracture mechanisms of nanocomposites, nano-tensile/compressive test, nano-bending and nano-cutting of nanotube/silicon nanocomposites are investigated by molecular dynamics (MD) simulation. As a result of these analyses, it has been found that mechanical properties such as Young's modulus and fracture strength are sensitive to the orientation of nanotubes in the matrix. On the other hand, shearing deformation is insensitive to the orientation of nanotubes, Therefore, more stable ductile-mode machining is observed in cutting of the nanocomposite than that of silicon.