Innovative Production Machines and Systems Conference

Introduction (1)

• The finite elements method (FEM) simulation of machining involves many critical aspects: large plastic deformations, excessive heat generation, high strain rate effects, thermo-mechanical coupling, etc.

• However, the material flow behaviour at the high temperature, strain rate, and strain conditions encountered in machining cannot be provided by normal stress-strain curves or impact tests

• Moreover, modelling the flow dynamics material behaviour during chip formation is very complex and there is no confirmed model to describe the of the work material behaviour during cutting

• Often, extrapolations or material modelling simplifications using rigid-plastic or rigid-viscoplastic material models are use