双曲面陶瓷复合靶抗12.7 mm穿燃弹侵彻性能研究

Study on penetration resistance of hyperboloid ceramic composite target to 12.7 mm penetrating projectile

为研究双曲面陶瓷复合靶抗12.7 mm穿燃弹侵彻性能,基于ANSYS/LS-DYNA动力学软件,当短轴曲率半径R 1取0.43~0.83 m,长轴曲率半径R 2取1.00~1.40 m时,对12.7 mm穿燃弹侵彻双曲面陶瓷复合靶板进行了数值模拟,获取了典型着靶点的弹道极限;着角取15°~60°时,获取了跳弹临界速度。结果表明:弹道极限从靶板中心至边缘近似于指数型提高;在R 1相同的情况下,弹道极限随R 2增大而减小;在R 2相同的情况下,弹道极限随R 1增大而减小;同一着靶点,随着着角增大,跳弹临界速度呈指数型增加;取定R 1、R 2,相同的着角下,沿X负半轴,各着靶点跳弹临界速度逐渐降低,而沿X正半轴则是逐渐增大。

In order to study the penetration resistance of hyperboloid ceramic composite target against 12.7mm penetrating projectile,based on ANSYS/LS-DYNA dynamics software,when the curvature radius R 1 of the short axis is 0.43~0.83 m,and the curvature radius R 2 of the long axis is 1.00~1.40 m,the penetration of a 12.7 mm projectile into a hyperboloid ceramic composite target plate is numerically simulated,and the ballistic limits of typical targets are obtained.When the angle is 15°~60°,the critical velocity of ricochet is obtained.The results show that the ballistic limit increases exponentially from the center to the edge of the target plate.When R 1 is the same,the ballistic limit decreases with the increase of R 2.When R 2 is the same,the ballistic limit decreases with the increase of R 1.At the same target,with the increase of the angle,the critical velocity increases exponentially.If R 1 and R 2 are fixed,the critical velocity of each target point decreases gradually along the negative axis X and increases gradually along the positive axis X at the same angle.