铝纤维对黑索今水下爆炸性能的影响  

Effect of aluminum fiber on underwater detonation performance of RDX

作　　者：林谋金[1] 马宏昊[1] 沈兆武[1] 焦龙[1] 

机构地区：[1]中国科学技术大学近代力学系,安徽合肥230027

出　　处：《爆炸与冲击》2014年第3期379-384,共6页Explosion and Shock Waves

基　　金：国家自然科学基金重点项目(51134012);国家自然科学基金面上项目(51174183)~~

摘　　要：将铝纤维添加到RDX中得到新型非理想炸药,并与RDX进行水下爆炸对比实验,得到2种炸药在不同位置的压力时程曲线,经过分析计算得到两者水下爆炸的冲击波压力峰值、冲量、冲击波能、气泡脉动周期以及气泡能。结果表明：距离药柱相同位置处,铝纤维炸药的压力峰值低于RDX,铝纤维炸药的冲击波冲量高于RDX,其差值受离药柱的距离影响不大。与RDX相比,铝纤维炸药的比冲击波能降低了2%-5.2%,比气泡能提高了9.4%-23.36%,总能量平均提高了3.5%。铝纤维炸药比气泡能与总能量的比值为55%-60%,高于RDX的50%-53%,其总能量与爆热比值为74%-84%,低于RDX的89%-95%。A new non-ideal explosive was obtained by adding aluminum fiber to RDX. Pressure-time curves were measured in different regions by underwater explosion experiments of aluminum fiber explosive and RDX. Peak pressure, impulse, shock wave energy, bubble impulsion period and bubble energy were obtained by analyzing the curves. The peak pressure of the new explosive is lower than that of RDX in same regions. The shock wave impulse becomes lager and the distance does not much affect the difference. Compared with RDX, the specific shock wave energy of the new explosive decreases by 2%-5.2%, the specific bubble energy rises by 9.4 %-23.36%, the specific explosion energy increases averagely by 3. 5%. The specific bubble energy is 55%-60% of explosion energy, which is higher than the ratio 50%-53% of RDX. The specific explosion energy is 74%484% of explosion heat, which is lower than the ratio 89%-95% of RDX .

关 键 词：爆炸力学 冲量 水下爆炸 铝纤维炸药 比冲击波能 比气泡能 

分 类 号：O381[理学—流体力学]