反坦克子雷双向EFP成型及侵彻模拟

Anti-Tank Mine Two-Way EFP Forming and Penetration Simulation

通过TrueGrid软件建立反坦克子雷双向EFP模型,使用有限元软件LS-DYNA进行数值模拟,当装药长径比、壳体壁厚、开孔直径等参数保持不变,而药型罩曲率半径R=1.0D且壁厚δ=0.045D时,反坦克子雷双向EFP结构参数最优;药型罩中心开孔结构比无孔结构成型时间短,形成的EFP长径比大,速度高,开孔结构侵彻孔径(3.64mm)比无孔结构侵彻孔径(3.03mm)约大20%,剩余速度较大,后效侵彻性能效果佳。

In order to improve the penetration power of the anti-tank mine, the anti-tank mine two-way EFP model was established by TrueGrid software, and the finite element software LS-DYNA was used for numerical simulation. The results show that when the parameters such as the aspect ratio of the charge, the wall thickness of the shell and the diameter of the opening remain unchanged, and the radius of curvature of the coating was R=1.0D and the wall thickness was δ=0.045D, the optimal anti-tank mine was obtained. Two-way EFP structural parameters;the opening structure of the center of the drug cover was shorter than that of the non-porous structure, and the formed EFP has a large long diameter and a high speed. The open-hole structure penetrating aperture (3.64 mm) is smaller than the non-porous structure penetrating aperture (3.03 mm) is about 20% larger, the residual speed is larger, and the aftereffect penetration performance is good. The conclusions obtained in this paper can provide some reference value for the research of anti-tank mines.