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) | 133 - 138 | |
DOI | https://doi.org/10.1051/jp4:2006134021 | |
Published online | 26 July 2006 |
J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 133-138
DOI: 10.1051/jp4:2006134021
An analysis of the propagation of front shock in concrete
P.-L. Hereil and E. BuzaudCentre d'Études de Gramat, 46500 Gramat, France
Published online: 26 July 2006
Abstract
The aim of the authors is to model the shock response of
concrete structures submitted to the effects of projectile penetration or
contact detonation, in a range of pressure levels from 0 to 20 GPa. The
limitations of current computers imply the need to homogenize the response
of the different constituents of concrete into a single macroscopic model.
Though concrete is widely used as a construction material, the knowledge
concerning its response under shock loading response remains rather modest.
An exhaustive review of the research effort in this field shows that the
limited available data is affected by an important dispersion. As a
consequence, any general rule correlating the composition of concrete to its
shock properties have not yet been evidenced. A simple method to predict the
shock Hugoniot of concrete based on a mixture theory is developed
considering concrete as a mix of cement hydrates, free water, rock and
voids. Experimental results obtained on special concrete compositions are
presented. They illustrate the relation between the wave structure and the
size of the aggregates, and so, the level of heterogeneity of the
composition. Numerical simulations demonstrate the ability of a mesoscopic
model to describe this phenomenon, and the failure of the homogenized
approach to do so.
© EDP Sciences 2006