壳装高能固体推进剂的殉爆实验与数值模拟

摘要

随着现代固体推进剂能量的提高和火炸药技术的融合，含有炸药颗粒的高能固体推进剂具有较高的机械感度和冲击波感度，极易发生殉爆现象。为深入探询固体推进剂的殉爆特征，采用实验和数值模拟对比分析方法，研究了某高能固体推进剂的殉爆过程，揭示了壳装高能固体推进剂的殉爆特性。研究发现，由于主发推进剂爆炸冲击波的瞬间冲击作用，造成被发壳体局部破坏形成碎片，碎片高速撞击推进剂药柱颗粒，使被撞击区域热能无法均匀分布，集中在碎片的尖锐棱角或突出处，导致相应质点温度剧增达到临界爆发点，最终导致被发推进剂发生殉爆。%With the increase of the chemical energy of the modern solid propellant and the integration of the explo-sives and gunpowder technologies, the high energy solid propellant, containing a large number of explosive parti-cles, presents a significant mechanical sensitivity and shock sensitivity, which would easily induce the sympathetic detonation.In order to investigate the features of the sympathetic detonation of solid propellant, this paper has re-searched the sympathetic detonation process of the high energy solid propellant by experiments and numerical simu-lations.The study found that under the blast impact of the solid propellant, the shells are partially damaged into pieces. The fragments impacted on the solid propellant acceptor with high speed, which caused uneven distribution of the thermal energy.The thermal energy concentrated on the sharp corners or projecting parts of fragments, which led to the temperature excursion, reaching the critical point.Next, the sympathetic detonation of the solid propel-lant finally occurred.