Titanium Nanometric Cutting Process Based on Molecular Dynamics

Based on the molecular dynamics simulation (MDS) method, this paper built up a molecular dynamics (MD) model of titanium nanometric cutting. It chose representative cutting conditions, to obtain the instantaneous image of atomic position through simulation and analyzed the material removal phenomenon, the surface formation process, the change rules of system potential energy and workpiece temperature in cutting process. It is found that the formation of the chips and the machined surface in cutting process are caused by the release of lattice energy and the lasting expansion of dislocation. The elastic recovery and the lattice reconstruction of the machined surface can slow down the increasing trend of total potential energy and temperature, accompanied by slight fluctuations.