Bomb Core Penetration Hard Target Numerical Simulation Of Multifunctional Bomb Design, And Small-caliber Armor-piercing Blast

In order to develop our country projectiles used for small caliber cannon, improve their damage efficiency and resolve the problem of installing ammunition alternately. Through exploring and analysing the multifunction projectile, the structure of the multifunction projectile which possesses the functions of the shrapnel and armor-piercing projectile was designed and demonstrated by experiment. In this way, it is helpful to the research course of the multifunction projectile.The LS-DYNAD was used to simulate the process of the different material, shape of the head, mass, impact angle and velocity tungsten carbide penetrator penetrating through targets and blasting of detonator. Through the analysis, the material capability effect the depth of penetrating, the tungsten carbide is more favorable than steel. At the same condition of the velocity, mass and diameter, the penetrating capability of the cone-shaped penetrator is better than hemisphere-shaped and the flat-shaped penetrator. When the impact angle is larger, the penetrating capability is worse and the slippage phenomenon is easier to happen on the surface of the target. The larger velocity the penetrator possesses, the more enormous of penetrating capability the penetrator possesses. The numerical simulation of blasting of detonator shows that the velocity of penetrator achieved from the explosion is small. The main reason is that the mass of the penetrator is heavy, and the mass of the detonator is little. Through the experiment of the small caliber multifunction projectile, the plan of the multifunction projectile was proved to be feasible. The simulated results are good agreement with experimental datas.In the end, the small caliber armor-piercing and blasting multifunction projectile was designed and calculated.