为了获得带壳装药水下爆炸下双层壳体结构的毁伤特性,基于小型爆炸水箱装置进行了双层壳体结构在水下爆炸下的毁伤试验,分析了双层壳体内板背空介质、内外板间填充介质、爆炸位置及距离等因素对双层壳体毁伤的影响,得到了带壳装药水下爆炸作用下双层壳体结构的毁伤模式。结果表明,在水下带壳装药载荷接触爆炸下,双层壳体出现整体塑性变形,内外板出现“口”、“田”、“十”字形撕裂破口,内外板及肋板出现局部弯曲或断裂变形3种毁伤模式; 水下相同接触爆炸条件下,爆炸位置处于双层壳体纵横肋板交叉处对内外板造成的毁伤范围更大,双层壳体间填充水介质大大降低了对内层壳体的冲击效应,提高了双层壳体内板的抗冲击能力。
Abstract
In order to obtain the damage characteristics of the double-layer shell structure under the underwater explosion of the shelled charge, the damage test of the double-layer shell structure under the underwater explosion was carried out with a small explosive tank device, and the influence of the hollow medium at the back cavity of the inner plate, the filling medium between the inner and outer plates, the explosion position and distance and other factors on the damage characteristics of the double-layer shell were analyzed, and the damage mode of the double-layer shell structure under the underwater explosion of the shelled charge was obtained. The results show that under the contact explosion of the underwater shell charge, there are three kinds of damage modes: the overall plastic deformation of the double-layer shell, the tearing of the inner and outer plates in the shape of “mouth”, “grid” and “cross”, and the local bending or fracture deformation of the inner and outer plates and ribs. Under the same underwater contact explosion conditions, when the explosion position is at the intersection of the transverse and longitudinal ribs of the double-layer shell, the damage range caused to the inner and outer plates is larger, and the filling of the water medium between the double-layer shells greatly reduces the impact effect on the inner shell and improves the impact resistance of the inner plate of the double-layer shell.
关键词
爆炸力学 /
水下爆炸 /
带壳装药 /
双层壳体 /
毁伤试验
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Key words
explosions mechanics /
underwater explosion /
shelled charge /
double-layer shell /
damage test
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