微/纳米粒度级配对炸药爆轰波阵面D_n(κ)关系的影响  

Influence of Micro-/Nano-scaled Particle Gradation on the D_n(κ) Relation of Detonation Wave Front

作　　者：沈飞[1] 王辉[1] 徐司雨[1,2] 

机构地区：[1]西安近代化学研究所,陕西西安710065 [2]西安近代化学研究所燃烧与爆炸技术重点实验室,陕西西安710065

出　　处：《火炸药学报》2018年第1期61-65,共5页Chinese Journal of Explosives & Propellants

基　　金：国家重大基础科研专项

摘　　要：为了研究微/纳米铝粉/RDX粒度级配对含铝炸药爆轰波阵面曲率效应的影响,采用光学波形扫描及电探针测速法测量了不同微/纳米铝粉/RDX粒度级配的含铝炸药在常温环境下的拟定态爆轰波形及爆速,并基于实验结果分析了炸药爆轰波阵面法向速度D_n与当地曲率κ之间的函数关系。结果表明,采用微/纳米铝粉/RDX粒度级配时,波阵面弯曲程度明显变小,且法向爆速受曲率效应的影响减弱,其中,微/纳米RDX颗粒质量比为50∶25或微/纳米铝粉颗粒质量比为15∶5时波形较为平坦,其最大曲率分别约为0.013和0.014mm^(-1),法向爆速较拟定态爆速的最大降幅分别约为0.03和0.04mm/μs,相当于常规微米试样的56%和61%,反映出波阵面能量因侧向流动而发生的损耗较小。To study the influence of micro-/nano-scaled aluminum/RDX paticle gradation on the wave front curvature effect of aluminized explosives,the steady wave shapes and the corresponding detonation velocities of the RDXbased aluminized explosives with different micro-/nano-scaled aluminum/RDX particle gradation under normal temperature environment were measured by optical waveform scanning and electrical probe measuring velocity method,and based on the experimental results,the function relation between the normal velocity（D_n）and the local curvature（κ）of the detonation wave front of explosives was analyzed.The results show that using micro-/nano-scaled Al/RDX paticle gradation,the bending degree of wave front is significantly reduced and the normal detonation velocity affected by the curvature is weakened,in which,the waveform of micro-/nano-scaled RDX with mass ratio of 50∶25 or micro-/nano-scaled Al with mass ratio of 15∶5 is flat,their maximum curvatures are about 0.013、0.014 mm^-1,respectively,and the maximum decrease of the normal detormation velocity compared with steady detonation velovity are 0.03 and 0.04 mm/μs,which is equivalent to 56% and 61% of the conventional micrometer samples,reflecting that the loss of the wave front energy is smaller due to the lateral flow.

关 键 词：含铝炸药 粒度级配 非理想爆轰 D_n(κ)关系 曲率效应 拟定态波形 

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]