In order to achieve optimum component properties while making efficient use of energy and material, forming processes are often operated as close as possible to the process limits. Material damage during the manufacturing process plays a particularly important role in preventing rejects or functional impairments.

In forming processes such as punching or profile rolling, materials are plastically deformed in order to achieve the desired final geometry. The damage-free formability of steel materials is very limited. For this reason, damage models for predicting the failure limit are becoming increasingly important in digital process design.

In this thesis, the forming processes of punch stacking and longitudinal profile rolling of T-profiles are considered. Damage models are to be created and calibrated for the loads occurring here with the aid of suitable material testing experiments. The work comprises the following work packages, which can be further detailed in a personal meeting:

• Developing suitable sample geometries to represent the load cases that occur
• Carrying out and evaluating calibration tests on a tensile-compression testing machine

Research method

Numerical, experimental