Lehrstuhl für Fertigungstechnologie, Universität Erlangen-Nürnberg

Simulative prediction of geometry of indirect hot stamped body parts for industrial applications



Datum: 20.03.2014


Author

  • Dr.-Ing. Paul Hippchen

Reporter

  • Prof. Dr.-Ing. habil. M. Merklein
  • Prof. Dr.-Ing. K. Roll

The prediction of the part geometry of indirect hot stamped car body parts and its final mechanical properties by means of the finite element method is one of the most important aspects in vehicle development. By means of the thermo-mechanical and metal-physically coupled material model introduced in this work, the mechanisms and boundary conditions of the indirect hot stamping process can be calculated closely to reality. Thus, the part geometry can be predicted in order to develop and assure geometrical compensation methods. Furthermore, the final mechanical properties can be calculated using the information of type, amount and distribution of phase fractions in the final microstructure. Additionally a method for mapping the resultant mechanical properties from the finite elements used in forming simulations to the finite elements used in crash simulations to assure the vehicle design in terms of passive safety.