工程爆破

2018, v.24;No.105(05) 23-27

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聚能射流引爆带壳装药数值计算分析
Numerical simulation of shaped charge jet initiating shelled explosive

詹发民;姜涛;周方毅;黄雪峰;
ZHAN Fa-min;JIANG Tao;ZHOU Fang-yi;HUANG Xue-feng;Navy Submarine Academy;

摘要(Abstract):

为了分析聚能灭雷装药中的聚能射流速度引爆带壳装药的能力,应用有限元数值计算方法,以金属杆撞击起爆带壳装药模型,模拟聚能装药金属射流引爆带壳装药,分析不同直径金属杆以不同初速的初始条件侵彻不同厚度靶板,引爆带壳装药,并与held理论进行了比较。通过大量的数值计算,得到了不同直径金属杆引爆带壳装药的射流极限速度。分析结果表明,金属杆直径越小,held判据的k值越大,即引爆带壳装药需要的射流速度越大;held判据的k值越小,即引爆带壳装药需要的射流速度越小。所以,要保证射流在具有一定直径的前提下,并提高射流的速度,以达到起爆装药的目的。
In order to analyze the ability of the shaped charge jet to detonate the shell charge in the shaped charge lightning extinguishing charge,the finite element numerical method is applied.The shaped charge jet initiate shelled explosive have been simulated by the model of metal bar impact shelled explosive,and the impact initiating capability of bar impact shelled explosive have been analyzed with different shell thickness,initial velocity and diameter of bar,and compare to the held theory.Through a large number of numerical calculations,the jet velocity limit of the metal bar with different diameters is set.The analyzed results show that the smaller the diameter of the metal bar,the larger the k value of the held criterion,that is the jet velocity required to initiate the shell charge is greater;the smaller the k value of the held criterion,the smaller the jet velocity required to initiate the shell charge.Therefore,it is necessary to ensure that the jet has a certain diameter,and improve the speed of the jet,to achieve the purpose of initiating the charge.

关键词(KeyWords): 聚能射流;冲击起爆;带壳装药;射流速度;数值模拟;金属杆
shaped charge jet;impact initiation;shelled explosive;velocity of jet;numerical simulation;metal bar

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作者(Author): 詹发民;姜涛;周方毅;黄雪峰;
ZHAN Fa-min;JIANG Tao;ZHOU Fang-yi;HUANG Xue-feng;Navy Submarine Academy;

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