力学与实践 ›› 2012, Vol. 34 ›› Issue (3): 9-11,28.DOI: 10.6052/1000-0879-11-331

• 应用研究 • 上一篇    下一篇

低密度脆性微流星体撞击航天器防护结构损伤效应研究

朱凼凼1,2, 庞宝君1, 陈海波1, 贾斌1   

  1. 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
  • 收稿日期:2011-09-12 修回日期:2012-02-26 出版日期:2012-06-15 发布日期:2012-06-27
  • 通讯作者: 朱凼凼, 博士研究生,高级工程师,主要研究方向为航天器空间碎片超高速撞击防护. E-mail: zhudangdang@yahoo.com.cn
  • 基金资助:

    国防科工局"十一五" 空间碎片专题研究资助项目(KJSP08203).

THE CHARACTERISTICS OF DAMAGE CAUSED BY IMPACT ON THE WHIPPLE SHIELD OF LOW-DENSITY BRITTLE MICRO-METEOROID

ZHU Dangdang1,2, PANG Baojun1, CHEN Haibo1, JIA Bin1   

  1. 1. Harbin Institute of Technology, Harbin 150001, China;
    2. China Academy of Space Technology, Research and Development Center, Beijing 100094, China
  • Received:2011-09-12 Revised:2012-02-26 Online:2012-06-15 Published:2012-06-27

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.

关键词:

低密度脆性|微流星体|撞击|防护结构|损伤效应

Abstract: In this paper, numerical impact experiments on spacecraft typical Whipple shield with silicate pro-jectile 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.

Key words:

low-density brittle|micro-meteoroids|impact|whipple shield|characteristics of damage

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