Student from Gifu University, Japan, visiting the IUL

This study analyzed the deformation behavior of workpieces during shear processing, focusing on the influence of different material properties and tool geometry on the resulting post-processing shape. The investigated materials SPCC (cold-rolled unalloyed steel) and SUS430 (ferritic stainless steel) comply with the Japanese JIS standards.
 
The uniaxial tensile tests were used to experimentally characterize the materials and provided the data for deriving the material models. These models formed the basis for simulations of a shear process model using the FEM software LS-DYNA, allowing the effects of punch-die clearance, tool speed, and tool geometry on the shearing process to be clarified.
 
Building on these findings, future work will focus on the identification of detailed fracture-related parameters. At the IUL, in-plane torsion tests will be used to determine fracture properties, such as the critical damage value according to Cockcroft–Latham. In parallel, the applicability of the shear process will continue to be investigated at Gifu University. Mr. Daiki Maruyama expresses his sincere gratitude to the Karl-Kolle-Foundation for their financial support during his research stay.

In appreciation of the kind support of the “G-CADET” program, Mr. Maruyama presented Prof. Korkolis with a small vehicle that was produced as part of a course. In this course, German exchange students work together with Japanese students to design and manufacture sheet metal components using deep drawing and stamping.