基于爆炸网络的定向战斗部试验及数值模拟研究

Based on the influence of synchronicity of multi-point initiation on warhead lethality, an initiation system was established using explosive logical circuit and mild multi-point initiation circuit. The lethality of amiable warhead with the initiation system was experimentally and numerically studied. The results show that the permitted synchronicity of 8-point initiation should not exceed 1.0 μs, and the proposed initiation system meets the synchronicity requirement while having other initiation functions. The experimental results reveal that the asymmetrical multi-point initiation could enhance the hit density of fragments by 12%, the perforation density of fragments by 32.26% and the fragment velocity by 8.99%. A virtual mesh, facilitating the fragment distribution counting on the target plate, was designed, which can efficiently reduce the pre-test preparation and the counting time of fragment impacting on the target plate during test. An interface code of external ballistic of fragments was programmed, which can be used to produce the target penetration pattern based on the numerically simulated results. The numerically simulated results coincide well with the experimental results.