Analysis of Material-Specific and Geometric Influences on the Numerical Springback Prediction

Funding: AiF/EFB
Project: 11/215/17613N
Contact: Heinrich Traphöner M. Sc.
Status: Completed

This project is conducted in cooperation with the Institute of Manufacturing Technology in Erlangen.

Shape Prediction and Improvement for Expansion of Non-Round Tubes

Funding: ReCIMP
Contact: Dr.-Ing. Till Clausmeyer

Increasing requirements on the utilization of assembly space result in more complex tube cross sections of containers.

Micromechanical Modeling of Material Forming for the Prediction of Anisotropic Hardening

Funding: Mercator Research Center Ruhr (MERCUR)
Project: Pr-2015-0049
Contact: Dr.-Ing. Till Clausmeyer
Status: Completed

Properties such as texture and hardness of the single phases determine the forming behavior of modern multiphase steels.

Model Integration for Process Simulation

Funding: German Research Foundation (DFG)
Project: SFB/TRR 188 • Subproject S01
Contact: Alexander Schowtjak M. Sc.

Aim of the SFB/TRR 188 is to understand and predict damage. The identification of different material and model parameters is necessary in order to analyze forming processes in terms of damage.

Novel In-Plane Torsion Specimen for the Characterization of Damage and Hardening

Funding: German Research Foundation (DFG)
Project: TE 508/65-1
Contact: Heinrich Traphöner M. Sc.

Equivalent strains much larger than 1.0 are obtained for ductile materials in the in-plane torsion test with circumferential groove.

Development of Simulation Strategies for the Application of Adiabatic Cutting in Sheet Metal Part Manufacturing in the Context of Materials Science

Funding: AiF/ FOSTA
Project: 18865 BG – P 1127
Contact:  Fabian Schmitz M. Sc.

Due to its high local rate of deformation ( ε̇ ≥103 s-1) and significant process time (t<2 ms ) adiabatic blanking exhibits temperature-induced softening (see figure a). This results in a high cutting quality and possible shortening of the process route in comparison to conventional blanking methods for advanced high-strength steels.

Robust Material Modeling for Sheet Metal Bending

Funding: ReCIMP
Contact: Fabian Schmitz M.Sc.
Status: Completed

Technical design of high-strength steels for bent structural parts in vehicles is a particular challenge. Firstly, the parts must endure a reverse bending during use; secondly, high-strength steels partially have strongly varying hardening properties. Simulations of the bending process require an accurate description of the material behavior.

Analysis of Strain-Path Dependent Damage and Microstructure Development for the Numerical Design of Sheet Bulk Metal Forming Processes

Funding: German Research Foundation (DFG)
Project: SFB/TR 73 • Subproject C4
Contact: Florian Gutknecht M. Sc.

For sheet-bulk metal forming processes the sheet thickness is adapted to the loading. In this context, thickening is a typical subprocess at the sheet edge (see figure a).