Lehrstuhl für Fertigungstechnologie, Universität Erlangen-Nürnberg

Influence of the variation of material properties on the formability of steel grades

Project Status: finished


The institute INI.FAU, which has been founded in 2006 by the Friedrich-Alexander-University in cooperation with the AUDI AG, provides the opportunity to combine theoretical knowledge with practi-cal application within a research project. At the chair of Forming Technology the project .Influence of the variation of material properties on the formability of steel grades. was initialized in cooperation with the tool manufacture department of the Audi AG in Ingolstadt in February 2008. The forming process of car body components is previously designed in numerical simula-tion. Due to the increasing complexity of the applied parts the process latitude is strongly restricted. Therefore variations of the mate-rial properties lead to rejections as a result of defects occurring in the serial process. The objective of the project is to design ro-bust processes by considering the variation of material properties and consequently re-duce the rate of rejections.

Research Groups



    • Sturm, V.; Merklein, M.:
      Variation of deep drawing steel grades’ properties in dependency of the stress state and its impact on FEA .
      International Journal of Material Forming, Online First (2011), published


    • Merklein, M.; Sturm, V.; Wahl, M.:
      Effiziente Bewertung von Blechumformprozessen durch die Reduzierung kritischer Einflussgrößen in der stochastischen Simulation.
      In: EFB, Hannover (Edtr.): Bauteile der Zukunft - Methoden und Prozesse - Tagungsband T31 des 30. EFB-Kolloquiums Blechverarbeitung am 2. und 3. März 2010 in Bad Boll, 2010, pp. 151-161

    • Sturm, V.; Annen, C.; Merklein, M.:
      Material Modelling for Stochastic Simulation.
      In: Kolleck, R. (Edtr.): Proc. 50th Conference of IDDRG 2010, Verlag der Technischen Universität Graz, 2010, pp. 687-696

    • Sturm, V.; Merklein, M.; Oberpriller, B.:
      Influence of the Variation of Material Properties on the Risk of Failure in Dependency of the Materials Flow Condition during Forming Processes.
      International Journal of Material Forming 3(2010), pp. 101-104

    • Annen, C.; Sturm, V.; Hora, P.; Merklein, M.; Oberpriller, B.:
      Einfluss von Chargenschwankungen in Abhängigkeit des Prozesszustandes.
      In: wt Werkstattstechnik online , 05-2010, Düsseldorf: Springer-VDI-Verlag, pp. 440-445


    • Merklein, M.; Sturm, V.:
      Characterisation of the flow behavior of deep drawing steel grades in dependency of the stress state and its impact on FEA.
      International Journal of Material Forming (2009), pp. 415-418

    Letztes Update: 24.08.2011