CL-20/HMX共晶冲击起爆模拟  

Simulations of shock initiation of CL-20/HMX co-crystal

作　　者：刘海[1] 李毅[1] 李俊玲 马兆侠[1] 陈鸿[1] LIU Hai;LI Yi;LI Junling;MA Zhaoxia;CHEN Hong(Hypervelocity Impact Research Center,China Aerodynamics Research and Development Center,Mianyang 621000,Sichuan,China)

机构地区：[1]中国空气动力研究与发展中心超高速碰撞研究中心,四川绵阳621000

出　　处：《爆炸与冲击》2020年第3期21-28,共8页Explosion and Shock Waves

基　　金：十三五装备预研领域基金(6140656020204)。

摘　　要：采用非平衡分子动力学方法模拟了CL-20/HMX共晶炸药冲击压缩和化学反应行为,获得了密度以及粒子速度的时空分布、冲击雨贡纽、冲击起爆压力、爆轰压力等数据,以及主要中间产物和稳定产物分布。模拟结果显示,共晶的初始分解路径是CL-20中N—NO2键断裂,主要稳定产物是N2、CO2和H2O。CL-20和HMX的分解速率随着冲击波速度的增加而增加,并且逐渐接近,但各冲击条件下CL-20分子的衰减速率均大于HMX。The shock compression and chemical reaction behaviors of CL-20/HMX energetic co-crystal explosives were simulated by nonequilibrium molecular dynamics.The spatio-temporal distributions of density,particle velocity,shock hugoniots,shock initiation pressure,and detonation pressure were obtained.The distribution of main intermediate products and the stable products were also investigated.The simulation results show that the initial reaction pathway is N—NO2 cleavage to form NO2 from CL-20 in co-crystal,with N2,CO2 and H2O as the main products.The decomposition rate of CL-20 and HMX increases with the increase of shock wave velocity gradually,but the attenuation rate of CL-20 is higher than that of HMX under each shock condition.

关 键 词：CL-20/HMX共晶 冲击波 冲击雨贡纽 化学反应 

分 类 号：O389[理学—流体力学]