Lehrstuhl für Fertigungstechnologie, Universität Erlangen-Nürnberg

Design of aluminum Tailored Heat Treated Blanks under quasi-series conditions



Datum: 24.07.2009


Author


Reporter

  • Prof. Dr.-Ing. M. Merklein
  • Prof. Dr.-Ing. K. Roll
  • Prof. i.R. Dr.-Ing. Dr.-Ing. E.h. mult. Dr. h.c. mult. M. Geiger

The scope of this work was the development of fundamental principles for the design of Tailored Heat Treated Blanks (THTB) for the production of complex car body parts under quasi-series conditions. In this context, the interdependencies between matter and heat flux as well as process windows for the local heat treatment and design principles for the heat treatment layout of an THTB were analyzed. The focus of these studies lay on the design of the initial strength pattern and the distribution of the maximum temperature, respectively, in the sheet metal plane in order to avoid fracture. Subsequently, the derived design principles were consolidated in an integrative framework according to the Axiomatic Design. Finally, the results and insights of all work emphases were applied and verified in a study on a b-pillar that cannot be produced without fracture using a conventional sheet metal blank.