Experimental Studies on Structural Response and Mass Loss of High-Velocity Projectiles Penetrating into Reinforced Concrete Targets
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摘要: 设计了高速钻地结构弹,采用35 mm口径的弹道炮和100 mm口径的滑膛炮,进行了0.15和1.5 kg弹体在1 030~1 630 m/s速度范围内侵彻钢筋混凝土靶的实验研究,对高速侵彻条件下弹体的结构响应、质量损失及生存极限速度等问题进行了探讨。结果表明:在高速侵彻混凝土过程中,弹体结构的变形破坏包括头部侵蚀/墩粗+侧壁磨蚀、弯曲/尾部破裂、破碎等形式,弹体头部侵蚀和弹体质量损失程度随撞靶初速度的增加而增加。Abstract: A high-velocity earth-penetrating structural projectile is designed, and experiments of projectiles with mass of 0.15 and 1.5 kg and impact velocity ranging from 1 030 to 1 630 m/s are carried out.The projectile structural response, mass loss and critical survival velocity for projectile in high-velocity condition are discussed.The results show that the three failure mode of projectile in high velocity penetration condition are head eroding plus parietal ablation, bending/tail crushing, and structure crushing, and the head eroding and mass loss increase with impact velocity.
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Key words:
- high-velocity /
- penetration /
- reinforced concrete target /
- structural response /
- mass loss /
- critical survival velocity
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表 1 实验靶的尺寸及实测强度
Table 1. The specification and the intensity of targets
Mass of the projectile/(kg) Geometry of the target Sectional dimension Thickness/(m) Observed strength/(MPa) 0.15 Cylinder Ø0.8 m 1.1 36.3 1.5 Square column 1.5 m×1.5 m 2.2 33.5 表 2 实验弹几何尺寸的变化及质量损失率
Table 2. The variation of the projectile size and mass
Mass of the projectile/(kg) Velocity/(m/s) $\frac{\Delta L}{L} /(\%)$ $\frac{\Delta D}{D} /(\%)$ $\frac{\Delta m_{\mathrm{t}}}{m} /(\%)$ $\frac{\Delta m_{\mathrm{b}}}{m} /(\%)$ $\frac{\Delta m}{m} /(\%)$ 0.15 1 030 3.4 3.5 0.46 12.56 13.0 1 210 5.7 3.5 0.14 13.75 15.1 1 352 8.3 5.4 2.14 16.24 18.4 1 390 10.2 5.8 3.35 12.58 15.9 1 438 9.3 4.9 3.15 11.66 14.8 1 482 10.3 6.7 3.54 12.85 16.4 1.5 1 546 16.4 3.1 9.6 3.3 10.9 1 577 23.0 3.3 14.5 4.1 18.6 -
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