|About this Abstract
||NUMISHEET 2021: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
||A Virtual Laboratory Based on Full-field Crystal Plasticity Simulations to Predict the Anisotropic Mechanical Properties of Advanced High Strength Steels
||Haiming Zhang, Qian Li, Dongkai Xu, Zhenshan Cui
|On-Site Speaker (Planned)
Applications of advanced high strength steels (AHSSs) are accelerating for designing lightweight automotive components. However, the unique microstructure of AHSSs renders their complex mechanical properties. Microstructure based crystal plasticity (CP) simulations are promising to predict the plastic deformation and mechanical responses of advanced metal materials under various deformation paths. Mechanical anisotropy of a cold-rolled DP980 sheet was evidenced from uniaxial tensile tests along different directions; the evolution of Lankford values (r-values) was traced by a 3D digital imaging correlation technique. EBSD data characterized on RD-TD planes at different thickness were used to reconstruct 3D representative volume elements, with emphasizing of matching phase constituent, orientation, and grain size. A genetic algorithm based inverse method then was adopted to identify the CP material parameters for both ferrite and martensite phases. The methodology was validated by comparing with the experimental results (flow stress curves and r-values) from uniaxial tensile and biaxial tensile tests.
||Definite: At-meeting proceedings