Innovative Production Machines and Systems Conference

Material modelling input into the FEM code

• The rheological behaviour of a work material can be introduced into the FEM code in different ways

• An analytical model for the material rheological behaviour can be user selected from a list in the code (e.g. power law, rate power law, Johnson-Cook, Kumar, etc.). Then, the necessary coefficients are manually input by the user

• If this method is used, the stress value for each FEM model node is calculated during the simulation using the analytical model

• Alternatively, the user can enter three tables representing the work hardening (table(x)), temperature (table(y)) and strain rate (table(z)) effects on the flow stress. The data in the tables are typically obtained from experimental tests