|About this Abstract
||NUMISHEET 2021: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
||New Forming Process for Springback Reduction by Continuous Stress Superimposition
||David Briesenick, Mathias Liewald
|On-Site Speaker (Planned)
The use of ultra-high-strength steels (UHSS) enables a lightweight and resistant design of sheet metal parts. In terms of manufacturing such dedicated materials, intense springback phenomena reduce the process stability and dimensional quality. In this context, new developments in springback compensation show promising results when superimposing compressive stresses at the end of the forming procedure. Therefore, this paper deals with a new approach, which modifies conventional deep drawing of open profiles by substituting the blankholder by L-shaped sliders. This allows an additional application of horizontal forces on the edge of the flange area and leads to advantageous free buckling and rolling of the material on lateral punch surfaces. A numerical feasibility study of this new forming method was performed, showing that compressive stresses and alternate bending through buckling reduce the amount of springback remarkably compared to conventional deep drawing.
||Definite: At-meeting proceedings