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Validation of homogeneous anisotropic hardening approach based on crystal plasticity

Research output: Contribution to journalJournal articlepeer-review

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  • Y. Jeong
  • F. Barlat
  • C. Tomé
  • W. Wen
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Article number160001
<mark>Journal publication date</mark>19/10/2016
<mark>Journal</mark>AIP Conference Proceedings
Issue number1
Volume1769
Number of pages6
Publication StatusPublished
<mark>Original language</mark>English
EventESAFORM 2016 19th International ESAFORM Conference on Material Forming - Nantes, France
Duration: 27/04/201629/04/2016
Conference number: 19

Conference

ConferenceESAFORM 2016 19th International ESAFORM Conference on Material Forming
CountryFrance
CityNantes
Period27/04/1629/04/16

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.