采用AUTODYN软件对非球弹丸超高速正撞击航天器单防护屏防护结构进行了数值模拟,给出了2维及3维模拟的结果。研究了在相同质量和速度的条件下,不同形状弹丸长径比、撞击方向等对超高速撞击防护结构所产生碎片云特性及舱壁损伤尺寸的影响,并与球形弹丸撞击所产生的碎片云及舱壁损伤进行了比较。结果表明:弹丸的长径比越大,弹丸的穿孔能力越强;非球弹丸的撞击方向不同,所产生的碎片云形状、质量分布、破碎的程度和穿孔的能力是不同的。 AUTODYN software was used to simulate the protective structure of single protective screen of non-spherical projectile super-high-speed positive impact spacecraft. The results of 2-D and 3-D simulations were given. Under the same mass and velocity conditions, the effects of projectile’s aspect ratio, impact direction and so on on the debris cloud characteristics and the bulkhead damage size caused by the hypervelocity impact protection structure were studied. The debris cloud And bulkhead damage were compared. The results show that the larger the aspect ratio of the projectile, the stronger the perforation capability of the projectile. The impact directions of the non-spherical projectiles are different. The shape, mass distribution, degree of fragmentation and perforation ability of debris cloud are different.