|About this Abstract
||NUMISHEET 2021: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
||Performance Evaluation of Planar Anisotropy Yield Functions for Sheet Metal Forming Analysis
||Bonyoung Ghoo, Naoki Ichijo, Mike Selig, Niko Manopulo, Bart Carleer, Wataru Suzuki, Hisashi Takizawa
|On-Site Speaker (Planned)
A precise material characterization and modeling is one of the most important factors in achieving high overall accuracy in stamping simulations. The performance measure for planar anisotropy yield functions, however, only covers a limited and isolated set of stress/strain states which are hardly representative of the full complexity arising in real stamping applications. The present work aims making a step in this direction by identifying a set of standardized accuracy measures based on laboratory experiments, tailored to represent manufacturing defects (necking, wrinkles, draw-in, springback etc.) encountered in practice. Both the tests and the measures are chosen to strike a balance between proper representation of the real situation and a manageable experimental complexity. The performance of different yield surface models is analyzed using the proposed approach and the methodology is subsequently validated based on a real stamping example.
||Definite: At-meeting proceedings