|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Material Behavior Characterization via Multi-Directional Deformation of Sheet Metal
||Dilational Response of Voided Polycrystals
||Daniel Savage, Marko Knezevic, Oana Cazacu
|On-Site Speaker (Planned)
A crystal plasticity finite element homogenization is used to calculate the dilatational responses of voided polycrystals. Using this approach, we study the effects of voided grain structure and crystallographic texture and the associated plastic anisotropy on the overall response. Examples involving both cubic and hexagonal metals are presented to quantify the role played by the grain-scale deformation on void evolution. Results in terms of the homogenized yield surfaces and void evolution are further compared to the predictions of a recent anisotropic analytical criterion for porous materials. The crystal plasticity homogenization confirms the features predicted by the analytical model, namely centro-symmetry of the gauge surface for cubic and total lack of symmetry for hexagonal metals, respectively.
||Planned: A print-only volume