含能材料防护屏在球形弹丸超高速撞击下的穿孔特性研究

doi:10.3969/j.issn.1000-1093.2017.11.007

兵工学报 ›› 2017, Vol. 38 ›› Issue (11): 2126-2133.doi: 10.3969/j.issn.1000-1093.2017.11.007

含能材料防护屏在球形弹丸超高速撞击下的穿孔特性研究

武强¹，张庆明²，龙仁荣²，龚自正¹

（1.北京卫星环境工程研究所，北京 100094； 2.北京理工大学爆炸科学与技术国家重点实验室, 北京 100081)

收稿日期:2017-01-10 修回日期:2017-01-10 上线日期:2018-01-03
作者简介:武强(1987—)，男，工程师，博士。 E-mail: wuqiang12525@126.com
基金资助:
国家重点基础研究发展计划项目（613311）

Perforation Characteristics of Energetic Material Shield Induced by Hypervelocity Impact of Spherical Projectile

WU Qiang¹， ZHANG Qing-ming², LONG Ren-rong², GONG Zi-zheng¹

(1.Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China; 2.State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China)

Received:2017-01-10 Revised:2017-01-10 Online:2018-01-03

摘要/Abstract

摘要： 以空间碎片防护设计为工程应用背景，将亚稳态含能材料应用于空间碎片防护结构。利用二级轻气炮对聚四氟乙烯/铝（PTFE/Al）含能材料防护结构进行了不同面密度、不同弹丸直径、不同速度的超高速撞击实验,获得了撞击过程中的高速摄像图片及光学高温计信号。分析结果表明，含能材料防护屏超高速撞击瞬间发生了可靠的冲击起爆反应，根据反应度的不同可分为冲击爆轰区、破碎爆燃区、零反应破碎区3个区域。基于实验结果，建立了铝合金弹丸超高速撞击PTFE/Al含能材料防护屏穿孔直径的无量纲经验公式。利用实验与分析结果验证了数值模拟的有效性，获得了环境温度对PTFE/Al含能材料防护屏超高速撞击穿孔特性的影响规律。

关键词: 爆炸力学, 聚四氟乙烯/铝含能材料, 超高速撞击, 穿孔过程, 穿孔直径

Abstract: The metastable energetic materials were prepared for the space debris shield. Hypervelocity impact tests of PTFE/Al energetic material shield under the conditions of different areal densities, projectile diameters, and impact velocities were conducted by using two-stage light gas gun, and the high speed photographs and the signals from optical pyrometer during impacting were obtained. The analysis results show that the shock initiation of PTFE/Al energetic material shield occurs in the instant of hypervelocity impact, and the perforation process can be divided into three stages: shock detonation, fracture and deflagration, and zero reaction and crushing. A dimensionless empirical expression for perforation diameter of PTFE/Al shield is established based on the experimental results of hypervelocity impact. The effect of ambient temperature on the perforation characteristics of energetic material shield is investigated. Key

Key words: explosionmechanics, PTFE/Alenergeticmaterial, hypervelocityimpact, perforationprocess, perforationdiameter

中图分类号:

O385
TB34

武强，张庆明，龙仁荣，龚自正. 含能材料防护屏在球形弹丸超高速撞击下的穿孔特性研究[J]. 兵工学报, 2017, 38(11): 2126-2133.

WU Qiang， ZHANG Qing-ming, LONG Ren-rong, GONG Zi-zheng. Perforation Characteristics of Energetic Material Shield Induced by Hypervelocity Impact of Spherical Projectile[J]. Acta Armamentarii, 2017, 38(11): 2126-2133.

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含能材料防护屏在球形弹丸超高速撞击下的穿孔特性研究

Perforation Characteristics of Energetic Material Shield Induced by Hypervelocity Impact of Spherical Projectile

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