|About this Abstract
||NUMISHEET 2021: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
||Sheet Forming Simulations with Advanced Constitutive Modeling
||Frederic Barlat, Seong-Yong Yoon, Rakesh Lingam, Vivek K Barnwal, Jin-Hwan Kim, Dong-Jin Kim
|On-Site Speaker (Planned)
In this presentation, the finite element (FE) forming simulations of a B-pillar of the POSCO Body Concept for Electric Vehicle (PBC-EV) are conducted. The material, a TRIP1180 steel sheet, was fully characterized in previous studies to determine the mechanical properties needed for the constitutive description and fracture modeling. The plastic behavior is described by the HAH20 distortional plasticity model, which combines the material response in reverse loading and cross-loading, and include the influences of plastic anisotropy and hydrostatic stress on yielding. The fracture model is based on a critical uncoupled damage value, which was optimized from digital image correlation data and FE calculations. For comparison purpose, the forming simulations are also conducted assuming isotropic hardening. A selected number of critical areas are selected and the simulation results are compared with the experimental data. The main differences obtained assuming isotropic hardening and distortional plasticity are discussed.
||Definite: At-meeting proceedings