Abstract: In traditional cutting simulation model, workpiece or tool model is set as rigid body, which can not effectively reflect the cutting process of workpiece and tool in thermodynamic coupling in real state; thermal conductivity increase of material can not accurately reflect the cutting fluid and material surface heat exchange process. J-C constitutive model and dynamic failure model are established to reflect the material processing characteristics. The cooling effect of cooling medium is simulated by adding convective heat transfer. Finite element software ABAQUS is used to simulate J-C constitutive model and dynamic failure model. The effects of different cutting parameters, tool shapes and cooling mediums during the machining process of AISI-1045 steel are analyzed, and the correctness of simulation results is verified by comparison with experimental data.

Key words: cutting simulation, cutting force, cutting temperature