8th International Conference on Mehanical and Physical Behaviour of Materials under Dynamic Loading
J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 171-176
DOI: 10.1051/jp4:2006134026
Intermediate strain rate constitutive equation of 304L stainless steel from modified notched specimen torsion test
O. Lurdos1, A. Aoufi1, G. Damamme2 and F. Montheillet11 PECM, UMR CNRS 5146, Centre SMS, École Nationale Supérieure des Mines de Saint-Étienne, 158 cours Fauriel, 42023 Saint-Étienne Cedex 2, France
2 Direction Scientifique, CEA/DAM Île de France, BP. 12, 91680 Bruyères-le-Châtel, France
(Published online 26 July 2006)
Abstract
A new experimental torsion test is developed to achieve
intermediate strain rates. The gauge length of the classical torsion bar
(27 mm) is reduced within the range 0 to 5 mm. Analytical predictions with
simple constitutive equation show that strain rates achieve the magnitude of
250 s - 1. A finite difference analysis is proposed to simulate the
test with more evolved constitutive equations. A comparison between
experimental and numerical results shows a good agreement.
© EDP Sciences 2006