摘要
爆炸箔起爆技术具有高安全性和高可靠性,且便于微型化、集成化,契合精密微起爆系统需求。为深入认识爆炸箔起爆系统小尺寸装药引发与爆轰输出特性,搭建电爆炸驱动飞片特性同步观测系统,以及飞片冲击起爆小尺寸装药爆轰的炸药与窗口界面粒子速度测试系统,研究飞片速度、形态特性及其冲击作用下超细六硝基茋(Ultrafine Hexanitrostilbene,HNS-IV)小尺寸装药的起爆与爆轰反应行为。研究结果表明:起爆电压与飞片出膛速度呈正相关,起爆电压900~1500 V时,飞片出膛速度为2000~4200 m/s;高强度冲击下HNS-IV基炸药爆轰成长距离短,在3455 m/s飞片作用下,2.14 mm内可成长为稳定爆轰,爆轰波结构分析表明其反应速率快,爆轰反应时间小于27 ns,反应区宽度仅0.13 mm;3 mm直径小尺寸装药条件并未显著影响HNS-IV炸药的主要爆轰反应,但反应后期出现能量快速衰减现象。基于试验标定炸药爆轰反应速率方程,进一步仿真研究了装药尺寸对能量输出的影响,结果显示与增加装药直径相比,增大药柱厚度更能有效提升装药端面的能量输出。
Exploding foil initiators(EFIs)represents a promising initiation technology for meeting the high requirements of miniaturized and integrated weapon systems for initiation capability.To conduct an in-depth research on the initiation and detonation output characteristics of small-sized charges in the exploding foil initiator system,a synchronous test system for observing the electrical explosion-driven flyer characteristics of metal bridge foils and a particle velocity measurement system for measuring the velocity of particle at the explosive-window interface for flyer-impact-initiated small-sized explosive detonation are built.The velocity and morphological characteristics of flyers and the initiation and detonation reaction behaviors of small-sized Ultrafine Hexanitrostilbene(HNS-IV)explosive under flyer impact were investigated.The results show that the flyer velocity is positively correlated with the initiation voltage.When the initiation voltage ranges from 900 V to 1500 V,the flyer velocity exiting the accelerator chamber is measured at 2000 m/s to 4200 m/s.HNS-IV-based explosives demonstrates a short growth distance of detonation under high-intensity impact.For instance,a stable detonation is achieved within just 2.14 mm under the action of a 3455 m/s flyer.The further analysis of detonation wave structure indicates that HNS-IV has a fast detonation reaction rate,with a reaction time of less than 27 ns and a reaction zone width of only 0.13 mm.Under the condition of a 3 mm-diameter charge,the main detonation reaction of HNS-IV explosives remaines largely unaffected,but the energy decays rapidly in the late stage of reaction.The detonation reaction rate model is first calibrated with the experimental results,and then the effect of charge size on the energy output is studied through simulation.The results show that the increase in charge thickness is more effective in enhancing the energy output at the end of charge than the increase in charge diameter.
作者
杨坤
刘丹阳
蹇雨桐
王菁
刘昌华
何亚新
顾玲芝
陈朗
YANG Kun;LIU Danyang;JIAN Yutong;WANG Jing;LIU Changhua;HE Yaxin;GU Lingzhi;CHEN Lang(State Key Laboratory of Explosion Science and Safety Protection,Beijing Institute of Technology,Beijing 100081,China;Sichuan Huachuan Industrial Co.,Ltd.,Chengdu 610105,Sichuan,China)
出处
《兵工学报》
北大核心
2025年第6期258-270,共13页
Acta Armamentarii
基金
国家自然科学基金项目(12302432)
中国博士后科学基金项目(2024M754097)。
关键词
电爆炸驱动飞片
HNS炸药
爆轰反应区
冲击起爆
爆轰反应速率方程
electric explosion-driven flyer
HNS explosive
detonation reaction zone
shock initiation
detonation reaction rate equation
