密闭条件下TNT的爆炸压力特性

Explosion Pressure Characteristics of TNT under Closed Condition

为研究密闭条件下炸药爆炸后的后燃烧过程压力特性,用压力传感器测量了不同气氛密闭爆炸罐内TNT后燃烧过程产生的准静态压力。结果表明,在密闭条件下,TNT爆炸后产生冲击波压力和准静态压力。在氧气存在下,TNT炸药的后燃烧效果较明显,能够产生更大的准静态压力。设计的爆炸罐适合研究密闭空间中炸药的后燃烧压力特性。

In order to study the pressure characteristics of after-combustion process after explosion of explosive un- der closed condition, the quasi-static pressure generated by after-combustion process of TNT in closed explosion tank with different atmosphere was measured by pressure sensor. The results show that under the closed condition, the explosion of TNT can produce two kinds of pressure： shock wave pressure and quasi-static pressure. Different atmosphere （air, oxygen and nitrogen） experiments show that in the presence of oxygen, after-combustion effect of TNT is obvious and can produce greater quasi-static pressure. The designed explosion tank is suitable to investigate the pressure characteristics of after-combustion of explosive under closed condition.