Extension of the sensitivity-based virtual fields to large deformation anisotropic plasticity
Extension of the sensitivity-based virtual fields to large deformation anisotropic plasticity
The virtual fields method is an approach to inversely identify material parameters using full-field deformation data. In this work, we extend the sensitivity-based virtual fields to large deformation anisotropic plasticity. The method is firstly generalized to the finite deformation framework and then tested on numerical data obtained from a finite element model of a deep-notched specimen subjected to a tensile loading. We demonstrated the feasibility of the method for two anisotropic plasticity models: Hill48 and Yld2000-2D, and showed that all the parameters could be characterise from such a test. The sensitivity-based virtual fields performed better than the currently accepted standard approach of user-defined ones in terms of accuracy and robustness. The main advantage of the sensitivity-based virtual fields comes from the automation of virtual fields generation. The process can be applied to any geometry and any constitutive law.
Anisotropic plasticity, Full-field measurements, Material testing, Sensitivity-based virtual fields, The virtual fields method
457–476
Marek, Aleksander
7cfb1c40-2e95-4e2b-81e5-c515674bece6
Davis, Frances M.
20f89066-bbac-42dc-908d-d89a747dc399
Rossi, Marco
1fea52ac-027b-4309-82e5-dd9cba8249e6
Pierron, Fabrice
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2019
Marek, Aleksander
7cfb1c40-2e95-4e2b-81e5-c515674bece6
Davis, Frances M.
20f89066-bbac-42dc-908d-d89a747dc399
Rossi, Marco
1fea52ac-027b-4309-82e5-dd9cba8249e6
Pierron, Fabrice
a1fb4a70-6f34-4625-bc23-fcb6996b79b4
Marek, Aleksander, Davis, Frances M., Rossi, Marco and Pierron, Fabrice
(2019)
Extension of the sensitivity-based virtual fields to large deformation anisotropic plasticity.
International Journal of Material Forming, 12 (3), .
(doi:10.1007/s12289-018-1428-1).
Abstract
The virtual fields method is an approach to inversely identify material parameters using full-field deformation data. In this work, we extend the sensitivity-based virtual fields to large deformation anisotropic plasticity. The method is firstly generalized to the finite deformation framework and then tested on numerical data obtained from a finite element model of a deep-notched specimen subjected to a tensile loading. We demonstrated the feasibility of the method for two anisotropic plasticity models: Hill48 and Yld2000-2D, and showed that all the parameters could be characterise from such a test. The sensitivity-based virtual fields performed better than the currently accepted standard approach of user-defined ones in terms of accuracy and robustness. The main advantage of the sensitivity-based virtual fields comes from the automation of virtual fields generation. The process can be applied to any geometry and any constitutive law.
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Marek 2018 Article Extension Of The Sensitivity
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Accepted/In Press date: 5 July 2018
e-pub ahead of print date: 24 July 2018
Published date: 2019
Keywords:
Anisotropic plasticity, Full-field measurements, Material testing, Sensitivity-based virtual fields, The virtual fields method
Identifiers
Local EPrints ID: 422993
URI: http://eprints.soton.ac.uk/id/eprint/422993
ISSN: 1960-6206
PURE UUID: 2aaf8f11-c6fc-4978-91aa-b7d0987c5ccb
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Date deposited: 09 Aug 2018 16:30
Last modified: 16 Mar 2024 04:40
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Author:
Frances M. Davis
Author:
Marco Rossi
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