卵形头部弹丸侵彻混凝土的研究

 用头部曲率半径为4.0、直径100 mm、质量为25 kg的卵形弹丸对混凝土进行侵彻实验，并测试了炮膛内和侵彻过程中弹丸的加速度时程曲线。实验用混凝土靶的抗压强度为35 MPa，密度为2 450 kg/m³，有3 m×3 m×3 m和2 m×2 m×2 m两种尺寸。测试弹丸发射和侵彻过程加速度的记录系统刚性固结于弹丸内部。弹丸侵彻初速在310 m/s至632 m/s之间，弹丸的峰值过载在12 000 g到22 000 g之间。实验后将测试的侵彻深度、侵彻过程弹丸的加速度时程曲线与用Forrestal 的理论模型计算得到的结果进行了比较分析。实验结果对认识侵彻的整个过程和相关弹药的设计有重大意义。

Study on Penetration of Concrete Targets by Ogive-Nose Steel Projectile

We conducted acceleration-time measurement of penetration experiments in targets with 100 mm diameter,4.0 caliber-radius-head,25 kg projectiles.The 3 m×3 m×3m and 2 m×2 m×2m concrete targets had an nominal Projectiles were designed to contain a single-channel acceleration data recorder,so we recorded accelerations in the bore of the gun and accelerations during the penetration event.A 100 mm diameter powder gun launched the 25 kg projectiles to striking velocities between 310 and 632 m/s.We compared the measured penetration depths and acceleration-time data with the calculated results using Forrestal formula.The calculated results are in good agreement with rigid-body acceleration measurements for the rise times and peak plateau responses.The acceleration-time data of projectiles can be helpful for devising armour-piercing projectile and defense engineering.