Investigation on Applicability of Shock Similar Law for Underwater Explosion of Aluminiferous Explosive
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摘要: 针对含铝炸药非理想性显著的特点，探索其水中爆炸后远场冲击波相似律的适用性。实验在8 kg当量TNT的爆炸水池中进行，在距离爆心不同位置处测量了冲击波压力剖面曲线，得到了峰值压力和压力衰减时间，结合量纲分析方法和含铝炸药的特点，对冲击波相似律适用性问题进行了探讨。实验结果表明，对于含铝炸药来说，存在着峰值压力相似而时间常数不太相似的特点，这与铝粉的二次反应放能有关。Abstract: Aiming at the notable non-ideal characteristic of aluminiferous explosive, applicability of shock similar law at underwater explosion far-field is explored. Experiments are carried out in the blast-pond, in which pressure sections of shock wave are tested at different distance to charge center. Peak pressure and time constant are obtained. Combining dimension analysis and characteristic of aluminiferous explosive, applicability of shock similar law is discussed. It is shown that energy produced by the reaction of aluminum power and detonable production should be eliminated, while shock similar law is applied to aluminiferous charge.
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Key words:
- mechanics of explosion /
- underwater explosion /
- aluminiferous explosive /
- similar law
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