| Numéro |
J. Phys. IV France
Volume 08, Numéro PR8, November 1998
2nd European Mechanics of Materials Conference on Mechanics of Materials with Intrinsic Length Scale : Physics, Experiments, Modelling and Applications
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|---|---|---|
| Page(s) | Pr8-143 - Pr8-150 | |
| DOI | https://doi.org/10.1051/jp4:1998818 | |
2nd European Mechanics of Materials Conference on Mechanics of Materials with Intrinsic Length Scale : Physics, Experiments, Modelling and Applications
J. Phys. IV France 08 (1998) Pr8-143-Pr8-150
DOI: 10.1051/jp4:1998818
1 Institute of Mathematics of the Romanian Academy, P.O. Box 1-764, 70700 Bucharest, Romania
2 Université de Metz, Laboratoire de Physique et Mécanique des Matériaux, URA 1215 du CNRS, Ile du Saulcy, 57045 Metz, France
© EDP Sciences 1998
J. Phys. IV France 08 (1998) Pr8-143-Pr8-150
DOI: 10.1051/jp4:1998818
A new rate-type gradient-dependent viscoplastic approach for stop-and-go strain band propagation. Numercial vs. physical experiments
C. Faciu1, A. Molinari2, M. Dablij2 and A. Zeghloul21 Institute of Mathematics of the Romanian Academy, P.O. Box 1-764, 70700 Bucharest, Romania
2 Université de Metz, Laboratoire de Physique et Mécanique des Matériaux, URA 1215 du CNRS, Ile du Saulcy, 57045 Metz, France
Abstract
It is shown that the non-local rate-type constitutive equation proposed by Faciu & Molinari [1] can predict a large number of experimentally observed features of the kinetics of the Portevin-Le Châtelier (PLC) bands. Numerically obtained serrated yielding curves and staircase creep curves for strain and stress controlled problems, respectively, are compared with experimental curves. A good agreement between the phenomenological approach and microscopic aspects of the PLC effect is obtained.
© EDP Sciences 1998