为了研究弹体破片分布与材料、炸药、壳体等的影响关系,以Mott模型为基础,通过切片的方法对弹体进行了理论分析。分析了破碎性系数B的主要影响因素,通过量纲分析得到了破碎性系数B计算公式。通过该公式得出了13mm壁厚弹体破碎性系数,且得到破片数和破片质量分布,并与试验数据进行对比分析误差小于5%,是因为回收率和端盖的影响。提高破片回收率和排除端盖的影响,该破碎性系数计算公式可用于弹体破碎性分布计算。

In order to study the influence relationship between fragment distribution and materials, explosive, shell and so on, based on Mott model, theoretical research was carried out by slice method. The main influencing factors of the fragmentation coefficient B were analyzed, and the formula of fragmentation coefficient B was got by dimensional analysis. The fragmentation coefficient with 13 mm thickness and fragment quantity and fragment mass were obtained by the formula. Compared with experimental data, the analytical error of the fragment coefficient B calculated by the formula was less than 5%, because of the influence of recovery rate and end cap. This formula could be used for the distributed computing of projectile brokenness by improving fragment recovery rate and excluding the influence of the end cap.