At present, the machining theory based on the elasticity and fracture mechanics can not explain micro-machining mechanism
completely. Molecular dynamics analysis has the particular advantage in researching the solid deformation of atom-scale area. It can aid in surveying the force features of
grinding and
indentation, stress state and grinding temperature and then explaining the micro-scale mechanism of the material remove and surface generation. The research shows: The atoms of the reconstituting crystal lattice and non-crystal lattice are piled up on the front of abrasive grain, with the continuous advancement of the abrasive grain, the material are removed; The hydrostatic stress has a great impact on the degree of the reconstituting crystal lattice and the formation of the non-crystal atoms; The degenerative layer of the finish surface are reconstituted by the severe deformation crystal lattice and the non-crystal atoms in the grinding surface, it consists of the outer non-crystal layer and the inner lattice deformation layer.