|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Computational Methods and Experimental Approaches for Uncertainty Quantification and Propagation, Model Validation, and Stochastic Predictions
||B-5: Coupled Elasto-plastic Self-consistent and Finite Element Crystal Plasticity Modeling: Applications to Sheet Metal Forming Processes
||Milovan Zecevic, Marko Knezevic
|On-Site Speaker (Planned)
In this work, coupling between the polycrystal plasticity based on the elastic-plastic self-consistent (EPSC) theory and implicit continuum finite elements is extended to work with shell elements. The plane-stress state present in shell element is accommodated by the EPSC model operating at every FE integration point. The Jacobian matrix needed to facilitate efficient coupling is derived for the imposed state of stress. The developed model is used to simulate cup-drawing and continuous bending under tension processing of anisotropic AA6022-T4 sheets. To quantify the uncertainties involved in simulations involving shell element, the same simulations are performed using the continuum elements and the differences between the two formulations are highlighted. Finally, the simulation results of both approaches are compared with the experimental measurements and the predictive capabilities discussed.