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Strain-path dependent hardening models with rigorously identical predictions under monotonic loading

Article dans une revue avec comité de lecture
Author
YANG, Yanfeng
107452 Laboratoire de Conception Fabrication Commande [LCFC]
VINCZE, Gabriela
60947 Universidade de Aveiro
BAUDOUIN, Cyrille
107452 Laboratoire de Conception Fabrication Commande [LCFC]
CHALAL, Hocine
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
BALAN, Tudor
107452 Laboratoire de Conception Fabrication Commande [LCFC]

URI
http://hdl.handle.net/10985/19682
DOI
10.1016/j.mechrescom.2020.103615
Date
2021
Journal
Mechanics Research Communications

Abstract

Accurate sheet metal simulation often requires advanced strain-path dependent material models, in order to predict the material response under complex loading conditions, including monotonic, reverse and orthogonal paths. More and more flexible models imply higher and higher costs in terms of parameter identification, computer implementation and simulation time, and robust comparison is often compromised by the inconsistent predictions of advanced models under monotonic loading. In this paper, a simple and general approach is proposed for the alteration of advanced hardening models in order to make them rigorously identical to each other under monotonic loading. This objective was reached without any drawback other than the addition of the corresponding equations. On the contrary, the flexibility and accuracy of the selected models was improved, and the parameter identification procedure became simpler, more accurate and more robust. Three material models of increasing complexity were selected to demonstrate the interest of this approach with respect to a complete set of characterisation experiments for a DP600 sheet steel.

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