CAJ | 학술논문

运用ANSYS／LS‐DYNA动力学仿真软件对超空泡射弹斜侵彻硬铝薄靶进行数值模拟，获得了不同弹着角和攻角下破口形状尺寸、射弹运动轨迹、弹道极限速度等参数的变化规律，从定性的角度着重探讨了弹着角和攻角的存在对侵彻效能的影响。仿真分析表明，侵彻过程中弹着角和攻角的存在会引起弹道的偏转和射弹应力的升高，从而降低射弹的侵彻能力。然而弹着角和攻角均会导致靶板损坏尺寸的增大，更有利于靶板的毁伤。
운용ANSYS／LS‐DYNA동역학방진연건대초공포사탄사침철경려박파진행수치모의，획득료불동탄착각화공각하파구형상척촌、사탄운동궤적、탄도겁한속도등삼수적변화규률，종정성적각도착중탐토료탄착각화공각적존재대침철효능적영향。방진분석표명，침철과정중탄착각화공각적존재회인기탄도적편전화사탄응력적승고，종이강저사탄적침철능력。연이탄착각화공각균회도치파판손배척촌적증대，경유리우파판적훼상。
The numerical simulation of supercavitating projectile oblique penetrating into thin aluminum plate with the non‐linear finite element software ANSYS/LS‐DYNA is proposed .The rules of projectile trajectory ,ballistic limit ,crevasse shape and sizes are obtained when projectile penetrates target plate with different impact angle and angle of attack .The effect of impact angle and angle of attack on the penetration efficiency are emphatically studied from a qualitative point of view . Simulation analysis clearly show s that the existence of impact angle and angle of attack can cause ballistic deflection and stress increase ,thereby projectile penetration ability will decline .However ,oblique penetration is more conductive to the traget'damage for the increase of the damage size .