Control of the forming zone by changing the surface pressure in the clamping surfaces during incremental swivel bending

• Applicant: Dr.-Ing. Peter Frohn-Sörensen
• Subject Area: Primary Shaping and Reshaping Technology, Additive Manufacturing
• Term: since 2025
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 546734675

Incremental swivel bending (ISB) is a process for flexible bending forming in which the bending moment is transferred through the clamping surface to the semi-finished product by friction. The aim of the project is to investigate the effective relationship between the contact normal stress and the forming zone that is formed. To this end, a mould concept is being developed to enable both static adjustment and dynamic control of the clamping force distribution. The guiding thesis of this project proposal is summarised as follows: The forming zone in the ISB process can be controlled in size and characteristics (geometry and strain gradient) by means of flexibly adjustable functional surfaces, so that the local forming capacity of the material can be utilised highly effectively and the failure limit against cracking can be shifted towards higher strain values. A significant expansion of the process window and a targeted adjustment of component properties such as strength and residual stresses is envisaged.

• DFG Programme: Research Grants
• Major Instrumentation: Hydraulische Aktuatoren inkl. Peripherie & Sensoren
• Co-Investigator: Professor Dr.-Ing. Bernd Engel