作　　者： ; ; ; ; ;

机构地区： 哈尔滨工业大学航天学院复合材料与结构研究所

出　　处： 《兵工学报》 2007年第1期94-100,共7页

摘　　要： 低地球轨道上的航天器易受到微流星体及空间碎片的超高速撞击,导致其严重的损伤甚至灾难性的失效。撞击损伤特性研究是航天器防护设计的一个重要问题。采用实验和数值仿真方法,对铝球弹丸超高速正撞击铝合金Whipple防护结构的舱壁损伤特性进行了研究,从而模拟空间碎片对航天器舱壁的超高速撞击作用,并利用AUTODYN-2D软件获得的仿真结果与实验结果进行比较,二者具有较好的一致性。分析了铝合金Whipple防护结构舱壁撞击损伤随弹丸直径、撞击速度和防护间距变化的规律,指出影响舱壁撞击损伤特性的主要因素。 All spacecrafts in low orbit are subject to hypervelocity impacts of meteoroids and space debris, which can in turn lead to its significant damage and catastrophic failure. An investigation into the impact damage characteristics has become an important problem for spacecraft protection design. The damage characteristics of the hypervelocity impact of Al-spheres to the rear wall of Al-Whipple shield were studied by the methods of experiment and numerical simulation. By comparing experiment data with numerical simulation results from AUTODYN-2D, it is found that the former is consistent with the latter fully. The impact damage law of rear wall of Al-Whipple shield by hypervelocity impact of Al-spheres with the projectile diameters, impact velocity and protection space was analyzed, and the leading factors which affect the damage of rear wall were proposed.

关 键 词： 爆炸力学 超高速撞击 防护结构 损伤 数值模拟

领　　域： [航空宇航科学与技术] [航空宇航科学技术] [理学] [理学]