太空太阳能电池阵超高速碰撞毁伤特性的数值研究

Numerical Study on Damage Characteristics of Hypervelocity Impact Solar Array

太空太阳能电池阵服役期间易遭受空间碎片的撞击,在3-5 km/s的速度范围内进行了太空太阳能电池阵超高速碰撞毁伤特性的数值研究与实验验证。得到了不同时刻的应力云图及碰撞速度与穿孔尺寸的关系曲线。研究表明：碰撞位置产生椭圆形穿孔,碰撞在中心位置时,穿孔尺寸在长轴和短轴方向均随速度的增加而增大,最后趋于定值;玻璃盖片出现放射性裂纹。数值模拟与实验结果基本吻合。

Solar array will suffer from debris impact during their service in orbit, The damage characteristics of hypervelocity impact solar array were simulated and the results were verified by the experiment in 3 ~ 5 km/s. The stress nephogram at different collision time and the curve of impact velocity and perforation diameter were obtained. The study resuhs show that the oval perforation along the long axis and the short axis increases at first, then decreases and, tends to be stable at last with the impact velocity increasing when the impact point positioned in central. Numerical simulation and experimental results are basically consistent.