带壳有隙TNT炸药包的水下爆炸

裸炸药和有壳炸药空中爆炸的对比研究相当多,并且有了一致的结论;但对于水下带壳药包的爆炸少有研究,水中兵器水下爆炸破坏力都采用裸药的533公式.本文研究了这样的问题,并也研究了当柱形装药与壳体间留有间隙的情况.结论是水下爆炸时采用裸药的公式来计算一次冲击波峰值压力会带来一定的偏差,并且留有间隙虽然削弱了一次冲击波能量,但并不见得明显地增大了气泡脉动能量.

Underwater Explosion of TNT Dynamite with a Metal Shell and Annular Gap

There are quite a number of comparative studies on dynamites with or w ithout a metal shell in the air,and there are some consistent conclusions.But,th ere are few studies on dynamites with a metal shell in the water.The "533" formu la of bare dynamite was used to compute the underwater explosion force of weapon s.Such a problem was investigated,and the gap effect between metal shell and bar e TNT cylinder was also analyzed in CSSRC.The results show that using directly t he formula of bare dynamite to compute the peak pressure of shock wave for under water weapon will bring in a certain error.Although the annular gap decreases th e energy of shock wave,but it increases not necessarily the energy of bubble imp ulse obviously.