|About this Abstract
||NUMISHEET 2022: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
||Application of Elasto-visco-plastic Self-consistent Polycrystal Finite Element Model for Springback Analysis
||Youngung Jeong, Mooyeong Joo, Bohye Jeon, Frederic Barlat, Carlos Tome
|On-Site Speaker (Planned)
An incremental elasto-visco-plastic self-consistent (ΔEVPSC) crystal plasticity formulation implemented in a commercial finite element (FE) software was applied to a mild steel sample. The hardening behavior was described using a dislocation-density-based hardening model. In it, the evolutionary behavior of dislocation density follows from dislocation generation and annihilation rules. The empirical back-stress contributes to the Bauschinger effect, while the interaction between slip systems contributes to the latent hardening. The model parameters were calibrated using a set of mechanical tests, in which material undergoes changes in the strain path. The calibrated parameters were used to predict the springback that occurs after 3-point-bending, which was compared with the experimental result. The results indicate that the current crystal plasticity FE model can qualitatively capture the effect of pre-strain on the springback.
||Definite: At-meeting proceedings