逆序起爆下大锥角罩形成聚能射流的分析

The Analysis on Large Cone Line Formation of Jet by the Mode of Reverse Initiation

为了分析在逆序起爆方式下,炸药装药量对大锥角药型罩形成聚能射流的影响。利用LS-DYNA有限元分析软件,分别对装药长径比为0.4D、0.5D、0.6D、0.7D、0.8D 5种装药结构进行计算及分析。研究表明:大锥角药型罩在逆序起爆结构下可以获得高速细长的射流;并且增加装药量对聚能射流的速度以及成型没有太大影响;在0.4倍口径装药结构下,仍然能够获得高速细长大炸高的聚能射流。

In order to analyze the influence of explosive charge on the formation of jet about the large cone line under the mode of reverse initiation,the LS-DYNA finite element analysis software was used for computation and analysis on five charge structure 0.4D、0.5D、0.6D、0.7D、0.8D.The test shows that high-speed amd slender jet can be obtained;Charge increase has little impact on formation and the speed of jet;At 0.4 times of the diameter charge structure,the ideal jet could also be acquired.