摘要
文章基于空间碎片被动防护需求,提出了一种梯度波纹夹层防护结构,并对其超高速碰撞过程及形成碎片云的特性进行了仿真分析。仿真结果表明,相比于Whipple结构,在梯度波纹夹层结构中冲击波的卸载方式更复杂,更有利于空间碎片的破碎;碰撞速度在5~20 km/s时,碎片云的膨胀半角先增大后减小;夹层结构中前置波纹板对撞击动能中不可逆功的吸收量和吸收占比最大。研究结果对空间碎片被动防护结构的设计具有一定的参考价值。
In view of the demand of the protection of the spacecraft against the orbital debris, a gradient corrugated-core sandwich bumper shield under hypervelocity impact is numerically studied. It can be seen that the propagation of the shock wave in the gradient corrugated-core sandwich bumper shield is more complicated than that in the Whipple shield, and that is more conducive for the crush of the orbital debris. With the increase of the impact velocity from 5 to 20 km/s, the expansion angle of the debris cloud increases firstly and then decreases. Furthermore, it is shown that the front corrugated-core absorbs most impact energy of the debris. The research can help the design of the orbital debris shield.
出处
《航天器环境工程》
2018年第1期7-13,共7页
Spacecraft Environment Engineering
基金
中央高校基本科研业务费专项资金项目(编号:30915118821)
上海航天SAST基金项目(编号:SAST201521)
2015年度CAST-BISEE创新基金项目
关键词
空间碎片
梯度波纹夹层结构
超高速碰撞
碎片云特性
舱壁损伤特性
仿真研究
orbital debris
gradient corrugated-core sandwiches
hypervelocity impact
debris cloud characteristics
rear wall damage characteristics
simulation study
