Forming of Additively Manufactured Sandwich Sheets with Optimized Core Structures

Funding: German Research Foundation (DFG)
Project: 317137194
Contact: Stephan Rosenthal M. Sc.

In cooperation with the Institute for Product Engineering of the University of Duisburg-Essen additively manufactured sandwich sheet composites with core structures optimized for forming are developed.

The semi-finished core structures must withstand a forming operation without losing their structural integrity. The aim of the second funding period is the production and characterization of large-area semi-finished sandwich products. This is intended to overcome the currently prevailing space restrictions for additively manufactured components. In order to manufacture the semi-finished products, suitable joining methods (material- or form-fit; see figure) for connecting the additively manufactured core and the rolled top layer must be developed and tested. To further increase the formability of the semi-finished products, a new type of highly ductile TWIP steel is to be qualified as part of the project. To further increase performance, the structures will also be adapted by means of topology optimization.

Concept for joining and manufacturing large-area semi-finished sandwich products