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- W4386225892 abstract "Experimental and numerical studies were conducted to study the plastic and fracture behaviors of AISI 4340 steel (with three different heat treatments) under multiaxial stress loading conditions, including axial symmetric and plane strain loadings. The classical Gurson-Tvergaard-Needleman (GTN) plasticity model was extended and calibrated to consider Lode angle dependence on the material's matrix plastic strength especially needed for plane strain loadings. The 3D fracture loci of AISI 4340 steels were previously calibrated by the Modified Mohr-Coulomb (MMC) model. Considering the microvoid growth and nucleation mechanisms, GTN model is combined with MMC model to derive a new analytical solution of microvoid volume fraction at fracture (ff) under general loading conditions. The ff should NOT be a constant, and it depends on different stress states. The modified GTN-MMC model was implemented using VMAT in Abaqus, and it gives a very good correlation between experimental data and finite element simulations." @default.
- W4386225892 created "2023-08-29" @default.
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- W4386225892 date "2023-10-01" @default.
- W4386225892 modified "2023-10-16" @default.
- W4386225892 title "A Micro-Macro Mixed GTN-MMC Model to Study Plasticity and Fracture of AISI 4340 Steel" @default.
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- W4386225892 doi "https://doi.org/10.1016/j.tafmec.2023.104059" @default.
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