RDX基含铝炸药和TNT浅层土壤中爆炸开坑的数值模拟与试验

Numerical Simulation and Experiment of Craters Formed by RDX-based Aluminized Explosive and TNT in Shallow Soil

为了比较装填TNT和RDX基含铝炸药RL-F的杀爆弹在浅层土壤中的爆炸威力,利用LS-DYNA软件对两种装药弹体在土壤中的爆炸开坑过程进行了数值模拟,分析了两种装药弹体的地面鼓包运动和抛掷开坑的最终形态。结果表明,与TNT装药相比,在鼓包运动阶段,RL-F装药弹体的鼓包横向尺寸、鼓包高度和最大鼓包速度分别提高13.1%、23.8%和16%,爆坑直径、深度和体积分别提高11.5%、34.3%和54.5%。大口径杀爆弹上装填RDX基含铝炸药RL-F,可以较明显地提高弹药的爆破威力。

To compare the blast power of a frag-demolition shell charged with TNT and RDX-based aluminized ex- plosive RL-F detonated in the shallow soil, the processes of crater formed by the two kinds of charge explosives were numerically simulated by LS-DYNA code, and the bulging process of soil surface and final shape of crater were discussed. The results show that compared with the TNT, the bulging transverse size, bulging height and maximum bulging velocity of RL-F charges increase by 13. 1%, 23. 8% and 16% during the phases of bulging movement, respectively, and the final shape of crater shows that the crater diameter, depth and volume of RL-F charges increase by 11. 5% , 34.3% and 54. 5%, respectively. The blast power of the large calibre frag-demolition shell which charged with aluminized explosive RL-F can be improved greatly.