Determination of Anisotropic Plastic Constitutive Parameters Using the Virtual Fields Method

The aim of the present study is to retrieve all the anisotropic plastic constitutive parameters from uniaxial loading. A complex geometry which can provide very heterogeneous stress states in a uniaxial tensile test was chosen for steel sheet specimens. A digital image correlation technique was used...

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Bibliographic Details
Published inExperimental mechanics Vol. 54; no. 7; pp. 1189 - 1204
Main Authors Kim, J.-H., Barlat, F., Pierron, F., Lee, M.-G.
Format Journal Article
LanguageEnglish
Published Boston Springer US 01.09.2014
Subjects
Biomedical Engineering and Bioengineering
Characterization and Evaluation of Materials
Control
Dynamical Systems
Engineering
Lasers
Optical Devices
Optics
Photonics
Solid Mechanics
Vibration
Advanced high strength steel
Virtual fields method
Anisotropy
Full-field measurements
Plasticity
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Summary:The aim of the present study is to retrieve all the anisotropic plastic constitutive parameters from uniaxial loading. A complex geometry which can provide very heterogeneous stress states in a uniaxial tensile test was chosen for steel sheet specimens. A digital image correlation technique was used for the full-field heterogeneous strain measurement. The orthotropic Hill1948 yield criterion with Swift isotropic hardening was adopted as an elasto-plastic constitutive model. The virtual fields method (VFM) was employed as an inverse analytical tool to determine the constitutive parameters. All the parameters were successfully identified using the VFM by combining two tensile test results obtained in rolling and transverse directions.
ISSN:0014-4851
1741-2765
DOI:10.1007/s11340-014-9879-x