| 低密度脆性微流星体撞击航天器防护结构损伤效应研究 |
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| 引用本文： | 朱凼凼,庞宝君,陈海波,贾斌.低密度脆性微流星体撞击航天器防护结构损伤效应研究[J].力学与实践,2012,34(3):9-11,28. |
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| 作者姓名： | 朱凼凼 庞宝君 陈海波 贾斌 |
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| 作者单位： | 1. 哈尔滨工业大学, 哈尔滨 150001;
2. 中国空间技术研究院研究发展中心, 北京 100094 |
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| 基金项目： | 国防科工局“十一五”空间碎片专题研究资助项目 |
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| 摘 要： | 采用硅酸盐质弹丸模拟低密度脆性微流星体,开展了航天器典型Whipple 防护结构撞击实验研究,获得了低密度微流星体弹丸损伤模式和损伤规律,实验表明,当弹丸撞击速度在1.1~1.4 km/s,前板损伤模式从花瓣式开裂转变为穿孔,当速度为1.4 km/s 时后板鼓包头上出现裂纹；随着弹丸速度的进一步增加,后板出现剥落现象,并形成花瓣撕裂,当弹丸撞击速度达到1.95 km/s 时后板被击穿,导致防护结构受到破坏.
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| 关 键 词： | 低密度脆性 微流星体 撞击 防护结构 损伤效应 |
| 收稿时间： | 2011-09-12; |
THE CHARACTERISTICS OF DAMAGE CAUSED BY IMPACT ON THE WHIPPLE SHIELD OF LOW-DENSITY BRITTLE MICRO-METEOROID |
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| ZHU Dangdang,PANG Baojun,CHEN Haibo,JIA Bin.THE CHARACTERISTICS OF DAMAGE CAUSED BY IMPACT ON THE WHIPPLE SHIELD OF LOW-DENSITY BRITTLE MICRO-METEOROID[J].Mechanics and Engineering,2012,34(3):9-11,28. |
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| Authors: | ZHU Dangdang PANG Baojun CHEN Haibo JIA Bin |
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| Institution: | 1. Harbin Institute of Technology, Harbin 150001, China;
2. China Academy of Space Technology, Research and Development Center, Beijing 100094, China |
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| Abstract: | In this paper,numerical impact experiments on spacecraft typical Whipple shield with silicate projectile as low-density brittle micro-meteoroids are carried out to obtain a low-density brittle micro-meteoroids’ damage mode and damage law.It is shown that when the projectile impact velocity is between 1.1 km/s and 1.4 km/s,the front plate injury model changes from the petal-type cracking into the hole,when the speed is 1.4 km/s the cracks appear on the drum header.With the increase of the projectile speed,flakes occur on the back plate,and the petal-type crack is formed.When the projectile impact speed is 1.95 km/s,the back plate cracks into the hole,leading to the destruction of protective structures. |
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| Keywords: | low-density brittle micro-meteoroids impact whipple shield characteristics of damage |
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