ENHANCED DAMAGE EFFECT OF REACTIVE FRAGMENTS OBLIQUE PENETRATING TITANIUM ALLOY PLATES

Focusing on the reactive fragments oblique penetration behavior, a series of penetration experiments at velocity of 630-1040m/s at 0-60°were conducted. The results show that the area of perforation hole at 30° increase 143.53% compared with that of normal penetrations, ricochet occurs at 60°. The perforation size at critical velocity (v =705m/s) is much larger than that at higher velocity (v=734m/s) when both oblique penetrated at 30°. The damage zone of front titanium alloy plate was divided into 5 zones according to the morphology of damaged plate. The analytical mode considers both kinetic energy and chemical energy of reactive fragment is developed to reveal the mechanism of enhanced damage effect of reactive fragment oblique penetrating at critical velocity.