DEVELOPMENT OF A THERMOVISCOPLASTIC CUTTING MODEL USING FINITE-ELEMENT METHOD

In this paper, a cutting model is developed by applying the thermo-vis coplastic FEM (finite element method) to analyze the mechanics of stea dy state orthogonal cutting process. The model is capable of dealing w ith free chip geometry and chip-tool contact length. The coupling with thermal effects is also considered. In calculating temperature distri butions, the ''upwind'' scheme is employed to remove spurious oscillat ions that occur in the solution and therefore it is possible to analyz e high speed metal cutting. Orthogonal cutting experiments are perform ed for 0.2% carbon steel to validate the cutting model. Tool forces ar e measured and the results are discussed in comparison with the result s of the FEM analysis.