典型同轴双元装药爆轰波传播特性试验研究  

Experimental Study on Propagation Characteristics of Detonation Wave of Typical Coaxial Binary Charges

作　　者：沈飞 罗一鸣[1,2] 余文力 王煊军[1] SHEN Fei;LUO Yi-ming;YU Wen-li;WANG Xuan-jun(Rocket Force University of Engineering,Xi′an 710025,China;Xi′an Modern Chemistry Research Institute,Xi′an 710065,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：《火炸药学报》2022年第3期412-418,共7页Chinese Journal of Explosives & Propellants

基　　金：国防基础性稳定支持专项。

摘　　要：为了探究同轴双元装药的爆轰波传播特性,采用C-J爆速差为1.81mm/μs的两种含铝炸药制备了两种典型结构的同轴双元装药,通过高速扫描法和电测法分别获取了其爆轰波形演变过程、滑移爆速,并分析了波形特征、法向爆速等参量的分布规律。结果表明,爆轰波形的演变主要发生在低爆速炸药中,波形稳定后,低爆速炸药(DNAN基含铝炸药DRLU)的轴向爆速等于高爆速炸药(DNTF基含铝炸药DOL);当低爆速炸药位于内层时,其波形为聚心状,根据其法向爆速逐渐增大的趋势,可将其划分为初始区域、强爆轰区域、汇聚区域,其中,初始区域的法向爆速低于C-J爆速,其药量约占36%,汇聚区域药量最小,仅占5%,但其爆轰强度最高;当低爆速炸药位于外层时,其波形为散心状,仅可将其划分为初始区域、强爆轰区域,其中,初始区域的药量约占77%,且强爆轰区域的法向爆速仅略高于其C-J爆速。In order to investigate the propagation characteristics of detonation wave of coaxial binary charge,two kinds of coaxial binary charges with typical structures were prepared by using two aluminized explosives with C-J detonation velocity difference of 1.81mm/μs.The evolution of detonation waveform and sliding detonation velocity were obtained by high-speed scanning method and electrical measurement method respectively,and the distribution of waveform characteristics and normal detonation velocity were analyzed.The results show that the evolution of detonation waveform mainly occurs in the slower explosive,and when the waveform becomes stable,the axial velocity of the slower explosive(DNAN-based aluminized explosive DRLU)is equal to that of the faster explosive(DNTF-based aluminized explosive DOL).When the slower explosive is located in the inner layer,its waveform is converging,and according to the trend of increasing normal detonation velocity,it can be divided into initial region,overdriven region and convergent region.The normal detonation velocity of the initial region is lower than the C-J detonation velocity,and its mass ratio is about 36%.The mass of the convergent region is the lowest of 5%,but its detonation intensity is the highest.When the slower explosive is located in the outer layer,its waveform is divergent,and it can only be divided into the initial region and overdriven region.The mass ratio of its initial region is about 77%,and the normal detonation velocity of the overdriven region is only slightly higher than its C-J detonation velocity.

关 键 词：爆炸力学 双元装药 含铝炸药 爆轰波 法向爆速 强爆轰 C-J爆速 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O389[理学—流体力学]