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Direct usage of the wire drawing process for large strain parameter identification

Article dans une revue avec comité de lecture
Author
VENET, Gabriel
107452 Laboratoire de Conception Fabrication Commande [LCFC]
BALAN, Tudor
107452 Laboratoire de Conception Fabrication Commande [LCFC]
BAUDOUIN, Cyrille
107452 Laboratoire de Conception Fabrication Commande [LCFC]
BIGOT, Régis
107452 Laboratoire de Conception Fabrication Commande [LCFC]

URI
http://hdl.handle.net/10985/16999
DOI
10.1007/s12289-018-01458-z
Date
2018
Journal
International Journal of Material Forming

Abstract

Large strain hardening is the main material description ingredient for cold bulk forming process simulations. Hardening identification of large strains is a trade-off between cost, standardization and the ability to represent the experiment, but there are no standard procedures to date. In this proposed approach, large strains (larger than 1) are reached using an industrial wire drawing process, and measured data for identification are obtained from standard tensile tests. Fast semi-analytical post-processing was possible despite the significant process-inherited strain heterogeneity. The parameters of state-of-the-art hardening models were identified, and the robustness was demonstrated to reach far beyond the strain level attained in the experiments. As a consequence, accurate and robust large strain hardening modelling was achieved from standard (tensile test) acquisition by using industrial wire drawing pre-strains.

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