摘要
采用大落锤加载装置研究了压装TNT在热和撞击复合加载下的点火性能,探讨了底隙体积和温度对TNT点火性能的影响。结果表明,加载应力峰值与落锤上升高度的平方根成正比;底隙体积和温度均影响TNT的点火性能。20℃、底隙体积从28.6mm3增加到50.2mm3时,TNT点火时的加载应力峰值下降了18.3%;当底隙体积为50.2mm3、温度从40℃上升到50℃时,加载应力峰值下降了57.5%,加载应力峰值对温度的变化更为敏感;点火应力峰值与底隙体积成指数关系。
Ignition performances of TNT were studied by a great-scale drop hammer loading device under temperatures and impact loading actions. The effect of the volume of vodis and temperature on the ignition performance of TNT was investigated. The results show that the relation between square root of drop hammer increase height and loading stress peak value is linear, volume of vodis and temperature affect ignition performance of TNT. When temperature is 20℃ and the value of volume of vodis increases from 28.6 mma to 50.2 mma , the loading stress peak val- ue drops by 18.3 ;, while volume of vodis is 50.2 mma and temperature increases from 40 ℃ to 50℃, loading stress peak value drops by 57.5 %, which is more sensitive to temperature changes. Loading stress peak value and volume of vodis have an exponential relationship.
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2013年第2期38-41,共4页
Chinese Journal of Explosives & Propellants
关键词
物理化学
点火性能
TNT
大落锤加载
加载应力
底隙
physical chemistry
ignition performance
TNT
a great-scale drop hammer loading
loading stress
vodis
