|About this Abstract
||NUMISHEET 2021: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
||Crystal Plasticity Modelling of Large Strain Behaviour of Ti Sheet Alloys
||Chao Ma, Xiaoqian Guo, Huamiao Wang, Dayong Li, Yinghong Peng, Peidong Wu
|On-Site Speaker (Planned)
The Elastic Viscoplastic Self-consistent (EVPSC) model, with the Twinning and De-Twinning (TDT) description, is used to study the large strain behaviour of high pure (99.999%), single-phase α-titanium sheet under uniaxial tension and compression along the rolling direction (RD), transverse direction (TD), and the normal direction (ND). The deformation mechanisms considered in the present study are the prismatic slip, basal slip and pyramidal slip, as well as the extension twinning and contraction twinning. The EVPSC-TDT model is calibrated using the experimental stress-strain curves under uniaxial tension and compression along the RD as well as uniaxial tension along the TD. It is demonstrated that twinning of both extension and contraction twins, as well as deformation slips, affect significantly the behaviors of the α-Ti sheet. The numerical results are in good agreement with the corresponding experiments.
||Definite: At-meeting proceedings