|About this Abstract
||NUMISHEET 2021: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
||Analysis of Plane Strain Tension Regions of Anisotropic Yield Criteria for Sheet Metals
||Armin Abedini, Jacqueline Noder, Cliff Butcher
|On-Site Speaker (Planned)
The plane strain condition leads to an extremum point on a yield function with the highest major stress among all stress states. Despite the importance of this loading condition, the plane strain state is often not characterized experimentally due to difficulties that arise in interpreting results of plane strain experiments. A consequence of such tests is that deformation is inhomogeneous in the gauge region that makes it challenging to extract the stress-strain response of materials. Therefore, it is often left for phenomenological yield criteria to provide reasonable predictions for yield stress in the plane strain state. To this end, an inverse technique is developed in the present study based on the Logan-Hosford criterion to estimate the yield stress in plane strain tension. The technique is applied to two different automotive alloys by employing notch tension and Nakazima tests. The results of this analysis assist with calibrating advanced anisotropic yield criteria.
||Definite: At-meeting proceedings