The processing of the overall objective takes place in three successive funding periods of four years each.
The concept of scientific work underlying all funding periods is based on the selection of representative process chains for bulk and sheet metal forming and the associated standard material concepts. On the basis of the material concepts, the damage development is continuously characterized and numerically modeled on all scales relevant to engineering science understanding.
In the process chains, the TRR 188 focuses on forming processes and, if necessary, heat treatment. Primary forming as well as all subsequent processing steps such as machining and surface treatment are initially excluded.
1st funding period (granted)
The focus is on building a basic understanding of the mechanisms of damage involved in the forming processes and their interaction. Moreover, a generally valid, interdisciplinary definition and description of damage is to be developed.
The characterization of damage initiation and evolution takes place on different scales. For this purpose, suitable material-scientific measuring methods are used and expanded. Various methods are determined and tested to influence the damage during the forming process. At the same time, existing modeling approaches for the damage in forming processes are evaluated and new models are developed on the basis of materials science and manufacturing technology. Both, the characterization and modeling of damage, cover all scales from the nanoscale to the macro scale. The focus when using damage models is initially on the macro scale.
2nd funding period (planned)
The goal is to complete the modeling tools and to combine the approaches into a continuous, scale-bridging consideration of the damage development. With the help of the basic understanding and the models developed, forming processes are modified or, if necessary, newly developed with a view to minimizing damage. In addition, approaches for integrating the damage aspects into the component design are being developed.
3rd funding period (planned)
Finally, damage-reduced forming process chains are developed and optimized which, in combination with the previously developed design guidelines, enable more efficient components with lower weight.
