A COMPARATIVE STUDY OF MATERIAL FLOW MODELS FOR FINITE ELEMENT SIMULATION OF METAL CUTTING

Abstract

IIn recent years, finite element method (FEM) has been widely used for studying metal cutting process. The reliability of FEM simulation however depends considerably on the assumed material model. Hence, it is imperative to compare and verify the matreial model before further application. In this study, a series of simulations are carried out to compare 3 popular types of material model: high-speed compression, split Hopkinson pressure bar, and machining. The simulation results are compared with experiment to identify the best suitable method of determining flow stress data for high-speed machining.