基于圆筒试验的DNTF基叠层复合装药的爆轰驱动释能特性  

Detonation driving energy release characteristics of laminated composite charge of DNTF-based aluminized explosives based on cylinder tests

作　　者：沈飞 王辉[2] 王金涛[1] 余文力 王煊军 SHEN Fei;WANG Hui;WANG Jintao;YU Wenli;WANG Xuanjun(Rocket Force University of Engineering,Xi’an 710025,Shaanxi,China;Xi’an Modern Chemistry Research Institute,Xi’an 710065,Shaanxi,China)

机构地区：[1]火箭军工程大学,陕西西安710025 [2]西安近代化学研究所,陕西西安710065

出　　处：《爆炸与冲击》2023年第11期56-64,共9页Explosion and Shock Waves

基　　金：国家自然科学基金(12202349)。

摘　　要：为探究叠层复合装药的爆轰释能规律,采用爆速差为1.85 km/s的3,4-二硝基呋咱基氧化呋咱(DNTF)基高爆速炸药与高爆热炸药制备成等厚度的叠层复合装药,通过狭缝扫描试验和圆筒试验分别获得了装药内的爆速变化和产物的膨胀释能曲线,并结合2种炸药爆轰产物的相互作用过程,分析了叠层复合装药与单一装药释能过程的主要差异。结果表明:爆轰波交替传播时,2种炸药均能迅速进入稳定爆轰状态;产物膨胀时,2种炸药的相互作用使装药爆轰驱动能量的分布特征发生显著变化,高爆速炸药的加载区域扩大,导致铜管速度降低,比动能较单一装药下降了6.7%,而高爆热炸药的加载区域缩小,铜管速度升高,比动能较单一装药提升了14.1%;此外,高爆热炸药爆轰产物处于压缩状态,有利于提升铝粉的反应速率,有望进一步增强叠层复合装药的驱动做功能力。To investigate the releasing characteristics of detonation-driving energy in a laminated composite charge,a meticulously prepared composite charge of two distinct types of 3,4-dinitrofurazanfuroxan(DNTF)based explosives with uniform layer thickness was employed.These explosives demonstrated a noticeable detonation velocity difference of 1.85 km/s,one with exceptionally high detonation velocity while the other with exceedingly high detonation heat.The trajectory of the detonation wave at the bus bar of the composite charge was observed using the GSJ streak camera to analyze the velocity change process of the detonation wave as it crossed the two explosives.Subsequently,a 25 mm cylinder test was conducted to assess the expansion velocity and specific kinetic energy of the copper tube in the corresponding area of each explosive by using the photon Doppler velocimeter(PDV).The rupture process of the copper tube was observed synchronically using a high-speed framing camera to gain further insights.Lastly,the interaction process between the two explosives was investigated based on the pressure-volume relationship of the detonation products for each explosive,and the main difference in the energy release process between the laminated composite charge and the single charge was carefullydetermined.The results demonstrated that both explosives within the laminated composite charge swiftly transition into a stable detonation state as the detonation waves propagate alternately.When the products expand,the interaction between the two explosives significantly alters the distribution characteristics of the detonation-driving energy.The loading area of the high detonation velocity explosive enlarges,leading to a decrease in the velocity of the copper tube,resulting in a 6.7%reduction in its specific kinetic energy compared to the simple high detonation velocity charge.Conversely,the loading area of the high detonation heat explosive reduces,causing an increase in the velocity of the copper tube,resulting in a 14.1%improvement in

关 键 词：3 4-二硝基呋咱基氧化呋咱(DNTF) 含铝炸药 复合装药 爆轰波 圆筒试验 

分 类 号：O389[理学—流体力学] TJ55[理学—力学]