Alternativer Ansatz zur Vorhersage mechanischer Kennwerte bei der thermomechanischen Umformsimulation

Mechanical Properties of press-hardened components are significantly dependent on the cooling conditions. In this study the dependence of the mechanical parameters (Rm, Rp0,2, Ag, A 5-h10) on the cooling rate is determined experimentally (22MnB5 material, sheet thickness 1.5 mm, no coating). In addition, a method is presented to calculate the cooling rate on each node of a press-hardened simulation. Based on these cooling rates of each node, the experimentally determined mechanical properties are calculated. As a result the mechanical performance of the elements can be shown in Post-processing or could be used in subordinate simulations, for example crash simulations.