Lehrstuhl für Fertigungstechnologie, Universität Erlangen-Nürnberg



Elaboration of principles for mapping tribological systems in the FE-simulation



Project Status: finished

Members


Due to the increasing complexity of car body components, the process window for forming processes decreases constantly. In order to define this process window in the run-up of the process design, it is necessary to model the forming operations as realistic as possible in the FE simulation. Currently, the tribological conditions of the forming process are modelled by a constant friction coefficient. This simulation approach describes the reality insufficiently. Therefore, in the context of this INI.FAU project, in collaboration with AUDI AG, a basis will be created, which allows an improved mapping of the tribological conditions in simulation. Actual results of the velocity- and pressure dependency of the friction coefficient are shown in the diagram. The aim of this project is to increase the prediction accuracy of FE simulation and thus to ensure the process reliability of series production.

Bild1

Determined friction coefficient map by cup drawing tests

 


Research Groups


Publications

    2015

    • Zöller, F.; Sturm, V.; Merklein, M.:
      Experimental and numerical investigations on a pressure dependent friction model.
      In: Merklein, M. (Edtr.): Key Engineering Materials, Trans Tech Publications, 2015, pp. 403-410

    2014

    • Merklein, M.; Zöller, F.; Sturm, V.:
      Experimental and numerical investigations on frictional behaviour under consideration of varying tribological conditions.
      In: Groche, P. (Edtr.): Advanced Materials Research, Trans Tech Publications, 2014, pp. 270-278

    • Merklein, M.; Zöller, F.; Sturm, V.:
      Experimental and numerical investigations of the tribological conditions in a cup drawing process.
      In: Sfar, H. (Edtr.): Proc. Int. Deep Drawing Research Group Conf. 2014 (IDDRG 2014), Technical center for the mechanical industry, CETIM France, 2014, pp. 28-37

    Letztes Update: 23.09.2014