Validation of homogeneous anisotropic hardening approach based on crystal plasticity

Jeong, Y. and Barlat, F. and Tomé, C. and Wen, W. (2016) Validation of homogeneous anisotropic hardening approach based on crystal plasticity. AIP Conference Proceedings, 1769 (1). ISSN 0094-243X

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Abstract

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.

Item Type:
Journal Article
Journal or Publication Title:
AIP Conference Proceedings
ID Code:
132448
Deposited By:
Deposited On:
09 Apr 2019 13:25
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 11:55