| 梯度波纹夹层防护结构超高速碰撞特性仿真研究 |
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| 引用本文： | 邓泽华,郭锐,周昊,唐生勇.梯度波纹夹层防护结构超高速碰撞特性仿真研究[J].航天器环境工程,2018,35(1):7-13. |
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| 作者姓名： | 邓泽华 郭锐 周昊 唐生勇 |
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| 作者单位： | 1. 南京理工大学 机械工程学院, 智能弹药国防重点实验室, 南京 210094;2. 上海宇航系统工程研究所, 上海 201109 |
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| 基金项目： | 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 |
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| 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。
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| 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 |
| 收稿时间： | 2017/6/16 0:00:00 |
| 修稿时间： | 2018/1/20 0:00:00 |
Simulation of hypervelocity impact characteristics of gradient corrugated-core sandwich plates |
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| DENG Zehu,GUO Rui,ZHOU Hao,TANG Shengyong.Simulation of hypervelocity impact characteristics of gradient corrugated-core sandwich plates[J].Spacecraft Environment Engineering,2018,35(1):7-13. |
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| Authors: | DENG Zehu GUO Rui ZHOU Hao TANG Shengyong |
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| Institution: | 1. ZNDY Ministerial Key Laboratory, School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;2. Shanghai Aerospace System Engineering Institute, Shanghai 201109, China |
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| Abstract: | 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. |
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| Keywords: | orbital debris gradient corrugated-core sandwiches hypervelocity impact debris cloud characteristics rear wall damage characteristics simulation study |
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