Towards an holistic account on residual stresses in full-forward extruded rods

Abstract An holistic view is attempted towards prediction of the effect residual stresses induced by full-forward extrusion on fatigue life workpieces during operation. To study constitutive model accuracy forming simulations, a combined nonlinear isotropic/kinematic hardening as well isotropic part same are calibrated based five compression-tension-compression uniaxial stress experiments. A finite element developed adapting both aforementioned plasticity models and predicted states at surface workpiece compared against that corresponding experiment. Results show predictions remarkable FE-models with model. The qualitatively studied uncoupled multiscale simulations featuring gradient crystal microscale. While effective (homogenized) macroscale response indicates elastic macroscopically cyclic loading, accompanying reduction still present microscale within, e.g. grain boundaries.