TY - JOUR
T1 - Simulation of the Portevin - Le Chatelier effect using polycrystal plasticity
AU - Kok, S.
AU - Beaudoin, A. J.
AU - Tortorelli, D. A.
AU - Lebyodkin, M.
AU - Kubin, L.
AU - Fressengeas, C.
PY - 2003/3
Y1 - 2003/3
N2 - A polycrystal plasticity model is used to describe the Portevin - Le Chatelier effect in a velocity controlled tension test. An elastoviscoplastic constitutive model is developed. The resulting fully implicit procedure is introduced into both Taylor (material point) and finite element models. Statistical analysis of the stress drops collected through finite element simulation indicate power law distributions for continuous band propagation, consistent with experimental observations. No "artificial" gradient plasticity formulation is required since spatial gradients exist naturally due to grain incompatibilities.
AB - A polycrystal plasticity model is used to describe the Portevin - Le Chatelier effect in a velocity controlled tension test. An elastoviscoplastic constitutive model is developed. The resulting fully implicit procedure is introduced into both Taylor (material point) and finite element models. Statistical analysis of the stress drops collected through finite element simulation indicate power law distributions for continuous band propagation, consistent with experimental observations. No "artificial" gradient plasticity formulation is required since spatial gradients exist naturally due to grain incompatibilities.
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U2 - 10.1051/jp4:20030187
DO - 10.1051/jp4:20030187
M3 - Conference article
AN - SCOPUS:0038701961
SN - 1951-6355
VL - 105
SP - 191
EP - 197
JO - European Physical Journal: Special Topics
JF - European Physical Journal: Special Topics
T2 - 6th European Mechanics of Materials Conference on Non-Linear Mechanics of Anisotropic Materials EUROMECH-MECAMAT'2002
Y2 - 9 September 2002 through 12 September 2002
ER -