Simulation and Damage Analysis about Performed Fragments of Axial Forward Projection Fragment Warhead

The Axial Forward Projection Fragment Warhead is an efficient multi-purpose warhead,which can form a relatively energy concentrated group of cluster fragment in the axial direction and uniform distributed natural fragments in the radial.Thus,the comprehensive damage field can not only effectively compensate for the lack of precision,but also use the large fragment group to improve the quality of directional damage target.The axial velocity of fragments driven by explosives was greatly improved,and the warhead can full fight against incoming targets by high-density fragments in the axial direction.Shell expanding,rupture,pre-fragments throwing and fragments formation were simulated by application of LS-DYNA software.The fragment velocity,scattering angle parameters and distribution field were acquired,as well as the damage efficiency to the American-made anti-radiation missile was analyzed in coordinate.The results of numerical simulation verify that the Axial Forward Projection Fragment Warhead to incoming target's damage probability is 89.6%,while the Natural Fragment Warhead to the incoming target's damage probability is only 32.5%.Above all,the Axial Forward Projection Fragment Warhead is better than the Natural Fragment Warhead.