NUMERICAL SIMULATIONS OF REACTIVE MATERIAL-TITANIUM JET PENETRATING MULTI-SPACED PLATES

Abstract

The shaped charge with a reactive material-titanium liner (RM-TL) could not only meet the requirement of jet penetration depth, but also cause enormous aftereffect inside the target. Based on the platform of AUTODYN-2D code, the jet formation of the RM-TL shaped charge and its penetration behavior to multi-spaced plates were studied. Numerical simulations showed that the inner titanium liner mainly formed a high-velocity precursor jet and the outer reactive material liner became a major part of the slug during the jet formation process. With increasing the reactive liner thickness, the composite jet tip velocity dropped off gradually, and the pressure and the temperature in the reactive liner during detonation also decreased. For a given penetration time, with the increase of the reactive liner thickness and the cone angle, the penetration capability of the composite jet into multi-spaced plates reduced, but the mass of reactive materials inside spaced aluminum plates increased significantly. With increasing the titanium liner thickness, the penetration depth first increased and then decreased, but the penetration hole-diameter of multi-spaced plates and the follow-thru reactive materials inside the target dropped off, and most of the reactive materials accumulate in the hole of the steel block.