Numéro |
J. Phys. IV France
Volume 134, August 2006
EURODYMAT 2006 - 8th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
|
|
---|---|---|
Page(s) | 1189 - 1194 | |
DOI | https://doi.org/10.1051/jp4:2006134181 | |
Publié en ligne | 26 juillet 2006 |
J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 1189-1194
DOI: 10.1051/jp4:2006134181
High-speed blanking of copper alloy sheets: Material modeling and simulation
Ch. Husson1, S. Ahzi2 and L. Daridon31 Institut Supérieur d'Ingénierie de la Conception, Équipe ErMEP, 27 rue d'Hellieule, 88100 Saint-Dié-des-Vosges, France
2 IMFS, UMR 7507, Université Louis Pasteur /CNRS, 2 rue Boussingault, 67000 Strasbourg, France
3 LMGC, UMR 5508, Université Montpellier II/CNRS, Place Eugène Bataillon, 34095 Montpellier, France
Published online: 26 July 2006
Abstract
To optimize the blanking process of thin copper sheets (1. mm thickness), it is necessary to study the influence of the
process parameters such as the punch-die clearance and the wear of the punch
and the die. For high stroke rates, the strain rate developed in the
work-piece can be very high. Therefore, the material modeling must include
the dynamic effects.For the modeling part, we propose an
elastic-viscoplastic material model combined with a non-linear isotropic
damage evolution law based on the theory of the continuum damage mechanics.
Our proposed modeling is valid for a wide range of strain rates and
temperatures. Finite Element simulations, using the commercial code
ABAQUS/Explicit, of the blanking process are then conducted and the results
are compared to the experimental investigations. The predicted cut edge of
the blanked part and the punch-force displacement curves are discussed as
function of the process parameters. The evolution of the shape errors
(roll-over depth, fracture depth, shearing depth, and burr formation) as
function of the punch-die clearance, the punch and the die wear, and the
contact punch/die/blank-holder are presented. A discussion on the different
stages of the blanking process as function of the processing parameters is
given. The predicted results of the blanking dependence on strain-rate and
temperature using our modeling are presented (for the plasticity and
damage). The comparison our model results with the experimental ones shows a
good agreement.
© EDP Sciences 2006