Title of article :
On the ballistic resistance of double-layered steel plates: An experimental and numerical investigation
Author/Authors :
S. Dey، نويسنده , , T. B?rvik، نويسنده , , Z. X. Teng، نويسنده , , T. Wierzbicki ، نويسنده , , O.S. Hopperstad، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2007
Abstract :
Civil and military ballistic protection systems often consist of thin, high-strength steel plates. Such plates may either be
monolithic or layered with or without spacing. The idea of using layered plates instead of a monolithic one in order to
increase the ballistic perforation resistance is not new, and the effect of using targets made up of several thinner plates
has been investigated in the literature for a long time. However, results by various authors are contradicting and detailed
experimental and numerical work is still required.
In the present study, the ballistic perforation resistance of double-layered steel plates impacted by blunt and ogival projectiles
was investigated both experimentally and numerically. In the tests, 12 mm thick (monolithic or layered) targets of
Weldox 700 E were impacted using a gas-gun at sub-ordnance velocity, and the ballistic limit velocity of the different target
combinations was obtained. In general, good agreement was obtained between the numerical simulations and the experimental
results. It was found that in the case of blunt projectiles a large gain in the ballistic limit is offered by double-layered
systems. These advantages seem to disappear when ogival projectiles are used. However, the main conclusion from
both the experimental and numerical studies is that the overall protection level, i.e. the minimum ballistic limit velocity
obtained independently of projectile nose shape, seems to increase significantly by double-layering the target.
Keywords :
Layered target , Experimental tests , ballistic penetration , LS-DYNA , High-strength steel
Journal title :
International Journal of Solids and Structures
Journal title :
International Journal of Solids and Structures