Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Validation of homogeneous anisotropic hardening approach based on crystal plasticity
AU - Jeong, Y.
AU - Barlat, F.
AU - Tomé, C.
AU - Wen, W.
N1 - Conference code: 19
PY - 2016/10/19
Y1 - 2016/10/19
N2 - The current study investigates constitutive models at two different scales: 1) the micromechanical crystal plasticity framework using a dislocation density-based hardening model [1, 2]; 2) macroscale constitutive model based on a yield function that evolves according to the homogeneous anisotropic hardening (HAH) model [3, 4]. The polycrystalline aggregate, tuned for a low-carbon steel, is used to calculate the evolution of the yield surface during monotonic uniaxial tension. The results of the crystal plasticity model are used to train the anisotropic yield function and HAH parameters to demonstrate the flexibility of the macroscale constitutive approach. Through comparison between the two models, an improved rule for the HAH model is suggested.
AB - The current study investigates constitutive models at two different scales: 1) the micromechanical crystal plasticity framework using a dislocation density-based hardening model [1, 2]; 2) macroscale constitutive model based on a yield function that evolves according to the homogeneous anisotropic hardening (HAH) model [3, 4]. The polycrystalline aggregate, tuned for a low-carbon steel, is used to calculate the evolution of the yield surface during monotonic uniaxial tension. The results of the crystal plasticity model are used to train the anisotropic yield function and HAH parameters to demonstrate the flexibility of the macroscale constitutive approach. Through comparison between the two models, an improved rule for the HAH model is suggested.
U2 - 10.1063/1.4963544
DO - 10.1063/1.4963544
M3 - Journal article
VL - 1769
JO - AIP Conference Proceedings
JF - AIP Conference Proceedings
SN - 0094-243X
IS - 1
M1 - 160001
T2 - ESAFORM 2016 19th International ESAFORM Conference on Material Forming
Y2 - 27 April 2016 through 29 April 2016
ER -