To content
Department of Mechanical Engineering

Formability Limits of Advanced High-Strength Steels

-
in
  • Profil- und Blechumformung
  • RECIMP
  • Materialcharakterisierung
  • Industrienahe Forschung
Limits of the global (FLC) and local (FFL) formability in the prinicipal strain space © IUL
Limits of the global (FLC) and local (FFL) formability in the prinicipal strain space
Funding ReCIMP
Contact Siddharth Upadhya M. Sc

Identifying methods to characterize the formability of advanced high-strength steels is the essential point of the work being carried out in this project. Forming limit curves (FLC) and fracture forming limit diagrams (FFLD) are the tools prevalently used to identify the limits of global and local formability, respectively. Normally, a number of different tests with different specimen geometries are required to identify these limits. Analytical models allow for a determination of these limits with a reduced number of tests, thus saving time and money. In the planned work the robustness of a newly developed FLC model by Faurecia will be investigated and its applicability across steel families will be determined. The influence of the point of necking determination method on the FLC will also be investigated. Simultaneously, the possibility of determining the FFLD via a simple testing method, such as tensile tests or shear tests, will be explored followed by an experimental validation of its accuracy.