Effects of a dynamic confinement on the penetration resistance of ceramics against long rods

Malaise, Fre´de´ric; Tranchet, Jean-Yves; Collombet, Francis
April 2000
AIP Conference Proceedings;2000, Vol. 505 Issue 1, p1121
Academic Journal
Adequate confinement of a ceramic block can lead to its impenetrability against long rod penetrators. New ballistic experiments (encapsulated rod experiments) enabling a pressurization of the front face of the ceramic block (dynamic confinement) have been performed and compared to results obtained from standard unconfined configurations (DOP tests). Impenetrability of the ceramic block is obtained with the encapsulated rod configuration. A modeling approach based on a description of the fragmentation process of the ceramic is proposed. In particular, effects of the void content of the fragmented ceramic on its shear resistance are taken into account. Comparisons between Eulerian computation and the experiments show that conditions for rod dwell are linked to immobilizing fragments of ceramic in front of the projectile.


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