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Oral Poster

Load path modelling in single-step deep drawing of rotationally symmetric cups

Thursday (27.09.2018)
16:06 - 16:09 S1/03 - 283
Part of:

The reduction of material usage through damage control in metal forming processes provides the potential for cost reduction. The evolution of damage during metal forming processes has been shown to depend on the evolution of equivalent stress, stress triaxiality and the Lode parameter. However, the investigation of stress states does require numerical modelling of the forming process. From these models, load paths with regard to stresses, strains and temperatures can be extracted These represent the evolution of the respective variable during the forming process. To control damage in deep drawing, the prevalent load paths have to be modified. Aside from variation of the process parameters, such as ram velocity, die geometry and temperature, specific process setups can be used to achieve certain load paths. Numeric simulation of a single-step deep drawing process creates a basis to modify load paths through process variations such as multi-step deep drawing and reverse drawing . The numerical model is validated using physical single-step deep drawing experiments.

Matthias Nick
RWTH Aachen University
Additional Authors:
  • Dr. Thomas Bergs
    Fraunhofer-Institut für Produktionstechnologie
  • Dr. Daniel Trauth
    RWTH Aachen University