【作者】 陈艳丹； 卢永刚； 刘彤；

【Author】 Yandan Chen;Yonggang Lu;Tong Liu;Institute of Systems Engineering, China Academy of Engineering Physics;The Peac Institution of Multiscale Sciences;Chengdu Development Center of Science and Technology, China Academy of Engineering Physics;

【机构】 中国工程物理研究院总体工程研究所； 顶峰多尺度研究中心； 中国工程物理研究院成都科学技术发展中心；

【摘要】 为了研究用IN718镍基高温合金的航空发动机包容机匣在高速冲击作用下的抗侵彻能力,采用直径为5mm的球形弹丸,弹丸材料分别为304不锈钢、TC4和Al,利用二级轻气炮试验装置对IN718靶板进行了一系列弹道冲击试验研究。通过高速摄像机进行拍摄,304不锈钢、TC4和Al弹丸的入射速度范围为548.2m/s～1067m/s,478.5m/s～1341m/s,以及630m/s～1773m/s。对弹丸的剩余速度进行了测量和分析,并对弹道极限速度进行了验证,计算了靶板能量耗散。试验结果表明:在靶板被穿透的情况下,随着初始速度的增大,弹体损失的速度逐渐增大。在相同初始速度下,弹体损失的速度随弹丸材料强度的增加而减小。在试验冲击范围之内,304不锈钢、TC4和Al弹丸的弹道极限速度分别为561m/s,822.75m/s和1395.5m/s,随弹丸材料刚度的增加,弹道极限速度随之减小,说明弹道极限速度与弹丸材料密切相关。更多还原

【Abstract】 In order to investigate the anti-penetration performance of IN718 nikel-based superalloy plate, ballistic impact experiments are carried out on a two-staged light-gas gun with 5mm diameter spherical projectile, and the projectile materials were 304 stainless steel, TC4 and Al, respectively.captured via high-speed camera, The incident velocities of 304 stainless steel, TC4 and Al projectiles ranged from 548.2 to 1067,478.5 to 1341, and 630 to 1773, respectively. The residual velocity of the projectile is measured and analyzed, and the ballistic limit velocity is validated. The test results show that when the target plate is penetrated, the velocity of projectile body loss increases with the increase of initial velocity. At the same initial velocity, the velocity of projectile body loss decreases with the increase of projectile material strength. Within the test impact range, the ballistic limit velocity of 304 stainless steel, TC4 and Al projectile is 561, 822.75 and 1395.5, respectively. With the increase of the projectile material stiffness, the ballistic limit velocity decreases, indicating that the ballistic limit velocity is closely related to the projectile material.更多还原