基于高速摄影的水下爆炸破片侵彻特性试验

Experimental analysis of underwater explosion fragment penetrating characteristic base on high-speed recording device

为研究水下爆炸产生高速破片的侵彻特性,采用高速摄影技术对2种典型破片的侵彻过程进行了弹道试验.试验结果表明：冲击和空泡阶段破片侵彻深度随时间迅速增加,拖曳阶段增速逐渐放缓;而在这2个阶段速度衰减很快,到后期低速阶段速度衰减放缓,且其侵彻特性与质量密切相关.冲击和空泡阶段的实际侵彻深度为40 ～ 60 cm,这一深度仅相当于破片最终静止时侵深的40％左右,而这一过程却耗散了破片95％以上的初始动能.拖曳阶段破片虽然能在液舱中行进较远的距离,但液舱吸收的破片动能较少.

In order to study the penetration property of high velocity fragment produced by underwater un-contact explosive, ballistic experiments of two kinds of fragments were carried out base on high-speed recording device, the result show thatIn the phase of impacts and cavitation the perforation depth of fragment increase immediately and the velocity decay rapidly, and the increasing of penetration depth and the decay of velocity slow down in the drag phase. The perforation depth in the two phases is from 40 to 60 centimeter, it＇s about 40 percents of the final perforation, but the two phases are almost absorb 95 percents of the initial kinetic energy. The drag phase run a long distance in the water cabin, but the kinetic energy dissipation very little.