聚四氟乙烯基药型罩射流成型凝聚性研究

doi:10.3969/j.issn.1000-1093.2019.12.006

兵工学报 ›› 2019, Vol. 40 ›› Issue (12): 2433-2439.doi: 10.3969/j.issn.1000-1093.2019.12.006

聚四氟乙烯基药型罩射流成型凝聚性研究

李延^1,2，王伟²，张雷雷²，王在成¹，姜春兰¹

(1.北京理工大学爆炸科学与技术国家重点试验室，北京 100081; 2.北京航天长征飞行器研究所，北京 100076)

收稿日期:2019-01-08 修回日期:2019-01-08 上线日期:2020-02-14
作者简介:李延(1991—)，男，博士研究生。E-mail: liyan_damo@163.com
基金资助:
国家自然科学基金项目（11672042）

Research on Jet Coherency of PTFE-based Energetic Liner

LI Yan^1,2, WANG Wei², ZHANG Leilei², WANG Zaicheng¹, JIANG Chunlan¹

(1.State Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China; 2.Beijing Institute of Space Long March Vehicle, Beijing 100076, China)

Received:2019-01-08 Revised:2019-01-08 Online:2020-02-14

摘要/Abstract

摘要： 聚四氟乙烯（PTFE）基含能药型罩射流成型凝聚性关系到射流侵彻毁伤效果。通过数值模拟和试验验证相结合的方法，对PTFE/Ti/W含能药型罩射流成型特性开展研究。结果表明：含能药型罩与惰性铝罩的射流具有明显差异，由于含能药型罩材料声速较低，爆轰压垮药型罩形成脱体波，导致射流在飞行过程中会呈现径向发散效应，随着药型罩密度增加，射流凝聚性加强；含能侵彻体在成型过程中会不断发生反应膨胀，随着时间的增长，侵彻体轮廓逐渐模糊，密度不断减小；基于惰性材料模型的数值仿真方法能够在一定时间范围内对射流成型进行准确模拟，当侵彻体由于反应而造成的形貌改变不可忽略时，仿真与实际具有一定差距。

关键词: 含能药型罩, 射流成型, 声速, 凝聚性

Abstract: The jet cohesiveness of polytetrafluoroethylene (PTFE)-based energetic liner is related to the penetration and damage effect of jet. The numerical simulation and experimental verification were carried out to study the jet forming characteristics of PTFE/Ti/W energetic liner. The results show that there is a significant difference between the jets of energetic liner and inert aluminum liner. Due to the lower sound speed of energetic liner, the detached shock wave forms in the liner collapsed by the detonation wave, and the jet is radially diverged during flight. As the density of the liner increases, the jet coherency strengthens. The energetic penetrator continuously reacts and expands during forming. The contour of penetrator gradually becomes blurred and the density decreases with time. The numerical simulation method based on the inert material model can be used accurately to simulate the jet forming in a certain time frame. When the shape change caused by the reaction of penetrator cannot be ignored, the simulated results have certain disparity with the actual results. Key

Key words: energeticliner, jetforming, soundspeed, coherency

中图分类号:

TJ410.3⁺33

李延，王伟，张雷雷，王在成，姜春兰. 聚四氟乙烯基药型罩射流成型凝聚性研究[J]. 兵工学报, 2019, 40(12): 2433-2439.

LI Yan, WANG Wei, ZHANG Leilei, WANG Zaicheng, JIANG Chunlan. Research on Jet Coherency of PTFE-based Energetic Liner[J]. Acta Armamentarii, 2019, 40(12): 2433-2439.

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聚四氟乙烯基药型罩射流成型凝聚性研究

Research on Jet Coherency of PTFE-based Energetic Liner

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