| Issue |
J. Phys. IV France
Volume 134, August 2006
EURODYMAT 2006 - 8th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
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|---|---|---|
| Page(s) | 55 - 61 | |
| DOI | https://doi.org/10.1051/jp4:2006134010 | |
| Published online | 26 July 2006 | |
J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 55-61
DOI: 10.1051/jp4:2006134010
A practical constitutive model covering a wide range of strain rates and a large region of strain
S. Tanimura, H. Hayashi and T. YamamotoDepartment of Mechanical Systems Engineering, Aichi University of Technology; Gamagori, Aichi 443-0047, Japan
Published online: 26 July 2006
Abstract
Through intensive analysis of the tensile stress-strain
curves of a variety of materials over a wide range of strain rates of the
order of 10
s-1 obtained systematically by
using the Sensing Block Type High Speed Material Testing System (SBTS), two
unified sets of values of parameters for a modified constitutive model
specified for the materials group, were obtained. The one set is for
homogenous deformation and the other is for a wide range of deformation
reaching the true fracture strain. It was confirmed that both sets are
useful to simulate the dynamic stress-strain curves of any material
belonging to the material group of ferrous metals, including the viscous
term at high strain rates and the true fracture strain, over the wide strain
rate range, as long as the quasistatic tensile stress-strain curve of the
material concerned is known in advance.
© EDP Sciences 2006