定向战斗部水下爆炸相似性研究  

The Similarity Research on Underwater Explosion of Directional Warhead

作　　者：荣吉利[1] 何轩[1] 项大林[1] 步相东[2] 

机构地区：[1]北京理工大学宇航学院,北京100081 [2]中国船舶重工集团公司第705研究所,陕西西安710075

出　　处：《兵工学报》2014年第9期1329-1334,共6页Acta Armamentarii

基　　金：武器装备预先研究项目(1011001020102)

摘　　要：针对定向战斗部水下爆炸的实验过程中费用大、成本高的问题,通过量纲分析的方法对圆柱形炸药进行相似性分析,研究并获得了不同缩比模型与原模型之间爆炸威力场的关系,并使用AUTODYN有限元软件进行仿真计算。研究结果表明,AUTODYN仿真结果与量纲分析的结果一致,即当缩比比例为β时,在β3倍装药量的情况下,在β倍爆距处所产生的峰值压力与原模型一致,因此,可以使用不同缩比比例的模型来代替原型进行实验。该研究为使用缩比模型进行水下爆炸的实验提供了理论依据,具有一定的工程意义。In order to solve the problem of high expense in the underwater explosion of directional warhead, the similarity is researched by dimensional analysis. The aim is to research the relationship of explosion pressure between original and small scale models. The result of dimensional analysis is verified by the simulation of AUTODYN. As a result, if the mass of TNT in the small scale model is/33 times of that in original model, the peak pressure in original model is as same as that in the small scale at/3 times dis- tance. It indicates that the small scale model can replace the original model if the similarity rule is used. This research provide the theoretical basis for underwater explosion experiment which uses the small scale model. It has engineering significance to some extent.

关 键 词：兵器科学与技术 水下爆炸 相似性 缩比 量纲分析 AUTODYN 

分 类 号：O382[理学—流体力学]