旋进侵彻弹丸数值模拟与试验研究

Numerical Simulations and Experimental Study on Novel Rotating Penetrating Projectile

为了增加弹丸的侵彻深度,通过在传统卵形弹丸外表面带直槽和沟槽对混凝土靶板的侵彻破坏效能进行对比研究。基于TrueGrid建立了三种不同结构的弹丸有限元模型,应用LS-DYNA3D进行了数值模拟仿真,初步探讨三种不同结构弹丸和混凝土相互作用规律,得到了作用过程中三种不同结构弹丸的破坏效能。实验验证了理论研究和数值模拟的可行性和正确性。研究结果可为弹丸在增加侵彻深度效能优化设计上提供借鉴。

In order to increase penetrating depth of projectile,straight or spiral groove were shaped on the surface of the projectiles to con- trast the projectiles＇ damage efficiency when penetrating concrete target. Numerical simulations were carried out through LS-DYNA3D and finite element model created by True-grid, and the interaction laws of the three kinds of projectile and concrete target were preliminarily discussed. Meanwhile, the damage efficiency of the three kinds of projectile was obtained. The experimental study proved the feasibility and accuracy of numerical simulations. The result of the research can provide a reference for optimal design of increasing penetrating depth of earth penetrating projectile.