摘要
横向效应增强型侵彻体(PELE)的作用原理基于内芯和外层弹体使用密度不同的材料这一物理效应,因而弹体结构可能对作用效果产生重要影响。采用改变内外径比(I/O)和长径比(L/D)的方法,利用有限元程序ANSYS/LS-DYNA,对PELE以固定速度垂直撞击靶板进行了数值仿真研究。基于仿真结果,分析了弹丸的内外径比和长径比对横向效应的影响。内外径比取0.5～0.7、长径比取3～5时,PELE既能轻易地穿透靶板,使弹杆轴向速度降低不多,又能产生大量具有较高横向速度的破片,有效地发挥作用。
The functional principle of PELE （Penetrator with Enhanced Lateral Effect） is based on a physical effect which uses the difference in density between the exterior and the inner core. So the configuration of the projectile may affect the lateral efficiency of the PELE. By changing the inside tube radius ratio （I/O） and slenderness ratio （L/D）, some simulation was made on PELE impacting target perpendicularly with the same speed, utilizing FEA process ANSYS/LS-DYNA. Based on the simulation results, some analysis was made on the influence of the inside tube radius ratio and slenderness ratio to the lateral effect of PELE. That is to say, when the inside tube radius ratio is in the range of 0.5~0.7 and L/D 3~5, PELE will enhance its lateral effect availably. Provided with above condition, PELE will penetrate the target easily and its axial speed will fall less. Simultaneously, lots of debris will come into being with high lateral velocity.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2009年第1期39-42,共4页
Journal of System Simulation
