舰炮半穿甲模拟弹对金属靶板斜侵彻研究

Study on Oblique Penetration of Metal Plate by Naval Gun Semi-armor-piercing Simulation Projectile

舰炮作为打击海上、空中和岸上目标的主要武器之一,半穿甲弹的侵彻能力是评价其弹药毁伤能力的重要一环,而开展实船射击实验成本高、机会少。为研究舰炮半穿甲弹倾斜侵彻金属靶板的侵彻能力,参考美军MK-45舰炮使用的奥托·梅莱拉127 mm弹药设计半穿甲模拟弹,采用实验、数值仿真与经验公式相结合的方法分析靶板破环模式、破口尺寸。实验结果表明,在45°和60°两种靶板倾角、385 m/s和500 m/s两种着靶速度情况下,半穿甲模拟弹对12 mm厚E36钢板具有足够的侵彻能力,模拟弹对靶板侵彻的破坏形式为冲塞破坏,破口尺寸平均为弹直径的1.25倍。仿真结果表明:剩余速度、破口形状与实验结果吻合;Thor公式的计算结果与实验结果较为接近,经过参数优化后实验、经验公式与仿真得到的剩余速度误差不超过10%。

Ship gun is one of the main weapons for attacking the targetsat sea,air and shore,and the penetration ability of semi-armor-piercing projectile for ship gun is an important index of evaluating its damage ability.Carrying out live-ship firing test is costly and lack of opportunities.In order to study the penetration ability of naval gun semi-armor-piercing projectile,a semi-armor-piercing simulation projectile is designed by referring to OTO Melara 127 mm ammunition used by US MK-45 naval gun.On the basis of experiment,numerical simulation and empirical formula,the damage mode and crevasse size of target plate are analyzed.The experimental results show that,under the two plate inclination angles of 45°and 60°and two target velocities of 385 m/s and 500 m/s,the semi-armor-piercing simulation projectile has sufficient penetration ability to 12 mm thick E36 steel plate,and the damage mode of simulation projectile to target plate is a thrust destruction.The average size of the crevasse is 1.25 times the diameter of the projectile.The simulated results show that the calculated results including the residual velocity and breach are reasonably agreed with the experimental results.The calculated results of Thor s formula are relatively close to the experimental results.After parameter optimization,the residual velocity error obtained by the experiment,empirical formula and simulation does not exceed 10%.