为得到影响前向战斗部破片散布周向均匀性的因素,采用仿真和静爆试验的方法,定量描述了底面中心起爆和底面四点同步起爆两种模式引起的周向均匀性差异。研究发现,底面四点起爆时,在起爆点方位附近形成破片聚集区,破片聚集区方位与起爆点方位基本重合,平均相差仅3.825°。机理分析表明,多点起爆时源自相邻两起爆点的爆轰波产生叠加,叠加波压力大于两侧压力,使得叠加波方位上的破片在受强加速的同时被“推向两侧”,导致起爆点方位上破片分布相对密集。

For obtaining the factor influencing circumferential uniformity of forward-warhead fragment dispersion, circumferential dispersion uniformity difference of two detonation modes were described quantificationally by simulation and static explosion experiment, which are detonating at one center point and detonating synchronously at four points. The research shows that if the warhead is detonated synchronously at four points, there will be four fragments convergence areas at the orientations near detonation points, and the average difference is merely 3. 825°. Mechanism analyzing indicates that the blast waves rooting from each points overlap at the orientations between detonation points, and the overlapped wave is stronger than their sides. So the fragments at overlapped wave orientations are pushed aside when accelerated fiercely. As a result, fragments at detonation point orientations are denser comparatively.