动能深侵彻弹的力学设计(I): 侵彻/穿甲理论和弹体壁厚分析

在作者先前工作的基础上，进一步明确了适合于动能深侵彻弹的撞击函数和弹体几何函数的有效范围，可用于相关弹体结构的力学设计。同时从理论上研究了弹体的抗压/拉和抗弯能力，分别从抗压/拉和抗弯两方面来确定动能深侵彻弹弹体的极限壁厚。针对不同撞击速度的细长中空弹体斜侵彻混凝土靶，分析得到不出现弯曲破坏的弹体最大临界斜角和壳体壁厚下限，并给出弹体抗弯能力的最薄弱位置。对弹体的壳体厚度、局部加固和焊接位置提出建议。

Mechanics of structural design of EPW(Ⅰ): The penetration/Perforation theory and the analysis on the cartridge of projectile

The assumption of rigid projectile is usually employed to study the penetration/perforation of EPW. It is well known that only two dimensionless numbers, i. e. , the impact function I and the geometry function of projectile N, dominate the whole penetration process. The present paper further declares the available range of I and N of EPW, which are likely to be applicable to design the projectile body. The analyses on the compress/stretch and bending of projectiles are conducted to obtain the limit thickness of the cartridges. The minimum thickness of the cartridges and the maximum obliquity angle of projectile, without any bending failure and damage, are formulated in the case of hollow and slender missiles penetrating into concrete targets at different initial velocities. The weakest location of projectile under oblique impact is also predicted. Some suggestions are carried out to define the thickness of cartridge, the local strengthening and the weld locations.