反舰导弹动能穿甲效应中倾角的影响

Influence of Oblique Angle on the Kinetic Armor-piercing Effect of Anti-ship Missile

半穿甲反舰导弹战斗部侵彻目标的角度具有不确定性。从理论上给出了薄板花瓣破坏的模型后,采用ANSYS/LS-DYNA有限元分析软件对弹体不同倾角攻击目标的终点效应进行了分析。穿甲过程中,弹体和目标板选择了考虑应变、应变率和温度效应的Johnson-cook材料模型,分析了不同倾角对穿甲过程中弹体剩余速度及弹头姿态的影响。结果表明对于倾角效应来说,小角度时反舰导弹半穿甲战斗部穿甲能力略有提升;随着倾角增大,导弹穿甲能力降低甚至跳弹。

The penetration angle of semi-armor-piercing anti-ship missile is of uncertainty. A thin plate petaling model was proposed, and the process during which the missile attacked plate at different tilt angle was analyzed by the ANSYS/LS-DYNA. In the simulation, the Johnson-cook material model of cartridge and target which considering strain, strain rate and temperature effect was used. The influence of different tilt angle on residual velocity and warhead atti- tude was analyzed. The results show that the capability of ASM semi-armor-piercing warhead with minor tilt angle is better than that with nil obliquity. With the increase of tilt angle, the capability decreases steadily even the missile ricochet occurred without penetration.