起爆方式对双模串联毁伤元成型及侵彻性能影响的数值模拟-《爆破器材》

文章信息/Info

Title:: Numerical Simulation of Effect of Initiation Methods on Formation and Penetration Performance of Two Tandem Damage Elements

Author(s):: HUANG Song; YIN Jianping; ZHANG Fei; WANG Shaohong; HAN Yangyang ; School of Mechanical Engineering, North University of China (Shanxi Taiyuan, 030051)

摘要:: 针对同一成型装药形成多模式毁伤元问题，设计了一种同轴放置的三层球缺药型罩战斗部。运用软件ANSYS/LS-DYNA 对不同起爆方式下三层球缺药型罩形成不同模式的毁伤元进行数值仿真，对比分析了它们的成型及侵彻性能。结果表明：在该成型装药下，通过改变起爆方式,可以得到爆炸成型弹丸（EFP）和聚能杆式侵彻体（JPC）两种不同模式的毁伤元；其中，三层串联JPC的长径比是三层串联EFP长径比的3.4倍，且头部速度提高40.9%。两种模式的毁伤元均可穿透5层15 mm厚的间隔钢靶板，但三层串联JPC穿透靶板后的剩余头部速度较三层串联EFP提高53.5%，且它的剩余动能是三层串联EFP的11.4倍。与三层串联EFP相比，三层串联JPC的飞行速度更高、长径比更大、侵彻能力更强。可为不同模式的多层毁伤元研究提供基础。

Abstract:: Aimed at multimode damage elements formed by the same shaped charge, a three-layer (coaxially placed) hemispherical liner was designed. Software ANSYS/LS-DYNA was used to simulate the formation of different damage elements when the three-layer hemispherical liner was detonated by different methods. Formation and penetration performance of damage elements were compared and analyzed. Results show that two tandem damage elements, explosively formed projectile (EFP) and jetting projectile charge (JPC), could be obtained by changing the initiation method. Length-diameter ratio of the three-layer tandem JPC is 3.4 times of that of the three-layer tandem EFP, and head velocity of the three-layer tandem JPC increases by 40.9%. Both of the two damage elements could penetrate the five-layer spaced steel target plate with a thickness of 15mm. But the residual head speed of the three-layer tandem JPC is 53.5% higher than that of the three-layer tandem EFP, and its residual kinetic energy is 11.4 times of that of the three-layer tandem EFP. Compared with the three-layer tandem EFP, flight speed of the three-layer tandem JPC is higher, length-diameter ratio is bigger, and penetration ability is stronger. This study provides research bases and solutions for different models of multi-layer damage elements.