10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes | |
A Combined Isotropic, Kinematic and Cross Hardening Model for Magnesium AZ31B-H24 under Non-linear Strain Loading Path | |
Jia, Yueqian^1 ; Bai, Yuanli^1 | |
Department of Mechanical and Aerospace Engineering, University of Central Florida, Orlando | |
FL | |
32816, United States^1 | |
关键词: Anisotropic fractures; Compressive strain; Good correlations; Hardening behavior; Monotonic loading; Nonproportional loading; Uni-axial compression; User material subroutine; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/734/3/032129/pdf DOI : 10.1088/1742-6596/734/3/032129 |
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来源: IOP | |
【 摘 要 】
A fully modularized framework was established to combine isotropic, kinematic, and cross hardening behaviors under non-monotonic loading conditions. Three sets of state variables were defined and applied to consider the effects of, a) loading history, b) twinning and de-twinning and c) different pre-strain. Experiments under two types of non-proportional loading conditions were conducted along different orientations, 1) uniaxial compression-tension reversal loading with different amounts of compressive strains, and 2) two-step uniaxial tension, known as cross-loading conditions, with different pre-strains. No apparent cross-hardening effect was observed for this material. The calibrated new hardening model, with an anisotropic CPB06ex2 yield criterion and an eMMC anisotropic fracture model, has been implemented into Abaqus/ Explicit as a user material subroutine (VUMAT). Good correlation was observed between experimental and simulation results.
【 预 览 】
Files | Size | Format | View |
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A Combined Isotropic, Kinematic and Cross Hardening Model for Magnesium AZ31B-H24 under Non-linear Strain Loading Path | 1100KB | download |