Numéro |
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) | 197 - 202 | |
DOI | https://doi.org/10.1051/jp4:2006134030 | |
Publié en ligne | 26 juillet 2006 |
J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 197-202
DOI: 10.1051/jp4:2006134030
Fracture modelling of a high performance armour steel
P. Skoglund, M. Nilsson and A. TjernbergFOI, Swedish Defence Research Agency, SE-147 25 Tumba, Sweden
Published online: 26 July 2006
Abstract
The fracture characteristics of the high performance
armour steel Armox 500T is investigated. Tensile mechanical experiments
using samples with different notch geometries are used to investigate the
effect of multi-axial stress states on the strain to fracture. The
experiments are numerically simulated and from the simulation the stress at
the point of fracture initiation is determined as a function of strain and
these data are then used to extract parameters for fracture models. A
fracture model based on quasi-static experiments is suggested and the model
is tested against independent experiments done at both static and dynamic
loading. The result show that the fracture model give reasonable good
agreement between simulations and experiments at both static and dynamic
loading condition. This indicates that multi-axial loading is more important
to the strain to fracture than the deformation rate in the investigated
loading range. However on-going work will further characterise the fracture
behaviour of Armox 500T.
© EDP Sciences 2006