双层间隔靶抗杆式弹性能的数值模拟

Numerical Simulation in the Capacity for Anti-Penetrati on Enrironment of Twolayer Spaced Target

文中结合长杆弹侵彻双层间隔靶的实验,采用三维非线性动力学有限元程序LS-DYNA3D模拟了面、背板不同布置时长杆弹侵彻双层间隙靶的侵彻过程,研究了双层间隔靶面、背板的不同布置对其抗弹性能的影响,计算结果与实验结果吻合较好,得出弹杆的剩余动能的变化曲线,通过分析,结果表明,倾斜的放置面板或背板可以提高双层间隙装甲的抗弹性能,且面板同样放置时,随着背板倾斜角度的增大抗弹性能提高,研究结果对优化装甲的设计可提供参考。

It is very significant to study armor＇s protected ability, with respect to the actual experiment in this paper, when face plate and back board are different arranged, the process of projectile against two-layer spaced target was simulated with explicit finite element software LS-DYNA 3D, the effect of different arrangement of face plate and back board into the capacity for anti-penetration of two-layer spaced target was studied. The results of simulation were in good agreement with experimental results. Obtained the velocity and kinetic energy changing curve for penetrating through two-layer spaced target, the conclusion and its analysis indicate that the capacity for anti-penetration of twolayer spaced target can be improved by arranging obliquity the face plate or back board, moreover arranging similarly the face plate, the capacity for anti-penetration is increased with the back board＇s obliquity angle increasing. The studied results can provide reference for the design of two-layer spaced armor.