Numéro
J. Phys. IV France
Volume 10, Numéro PR9, September 2000
EURODYMAT 2000 - 6th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
Page(s) Pr9-161 - Pr9-166
DOI https://doi.org/10.1051/jp4:2000927
EURODYMAT 2000 - 6th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading

J. Phys. IV France 10 (2000) Pr9-161-Pr9-166

DOI: 10.1051/jp4:2000927

Biaxial direct tensile tests in a large range of strain rates. Results on a ferritic nuclear steel

C. Albertini, K. Labibes, M. Montagnani, E.V. Pizzinato, G. Solomos and B. Viaccoz

European Commission, Joint Research Centre, Institute for Systems, Informatics and Safety, TP480, 21020 Ispra (Va), Italy


Abstract
Constitutive equations are usually calibrated only trough the experimental results obtained by means of uniaxial tests because of the lack of adequate biaxial experimental data especially at high strain rate conditions. These data are however important for the validation of analytical models and also for the predictions of mechanical behaviour of real structures subjected to multiaxial loading by numerical simulations. In this paper some developments are shown concerning biaxial cruciform specimens and different experimental machines allowing biaxial tests in a large range of strain rates. This experimental campaign has also allowed study of the influence of changing the strain paths. Diagrams of equivalent stress versus straining direction and also equivalent plastic fracture strain versus straining direction are shown.



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