|About this Abstract
|NUMISHEET 2022: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
|Investigation of a Pre-strain-specific Edge Crack Sensitivity Factor and Its Implementation in FEM
|Alexander Kindsmueller, Roman Norz, Niko Manopulo, Wolfram Volk
|On-Site Speaker (Planned)
The shear cutting process can significantly reduce the formability of a shear cut edge, which can lead to edge cracking. This problem occurs especially when processing high-strength and ultra-high-strength sheet materials such as dual-phase steels. In practice, component manufacture often takes place as a sequence of several deep drawing and shear cutting operations. However, the influence of prior sheet forming on edge crack sensitivity has not yet been sufficiently investigated and has not been considered in simulations so far. In this work, an experimentally determined model is presented that describes the edge crack sensitivity as a function of preforming for a selected cutting strategy for the sheet material DP600. This model is implemented in FEM to study the manufacturability of deep-drawn collars into a previously formed sheet. Finally, the simulation results are validated by means of collar drawing experiments.
|Definite: At-meeting proceedings