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吕映庆 , 陈南勋 , 武海军 , 等 . 弹体高速侵彻超高性能混凝土靶机理 [J ] . 兵工学报 , 2022 , 43 ( 1 ): 37 - 47 DOI: 10.3969/j.issn.1000-1093.2022.01.005 http://doi.org/10.3969/j.issn.1000-1093.2022.01.005 为研究弹体高速侵彻超高性能混凝土的现象和规律，对钢纤维体积分量为1.0%的C120超高性能混凝土和钢纤维体积分量为2.5%的C160超高性能混凝土开展准静态单轴压缩试验、劈裂抗拉试验和弹体高速侵彻试验。采用修正的美国国防研究委员会(NDRC)经验公式和量纲分析得到的经验公式，对侵彻超高性能混凝土试验中的弹体侵彻深度进行计算分析。计算和试验结果表明：相比于普通混凝土，超高性能混凝土有着较高的拉压比和优越的抗靶体表面破坏的能力，试验后靶体的表面开坑面积较小，开坑直径大约为8~12倍弹径；向外沿径向产生的裂纹较小且短，平均裂纹数量为4条；随着超高性能混凝土的强度从120 MPa提高到160 MPa，靶体表面开坑直径减小，开坑深度降低，钢纤维的加入提高了靶体的韧性，从而降低了靶体的表面开坑直径；相比于普通混凝土，超高性能混凝土的侵彻深度较小，但随着超高性能混凝土靶体的强度从120 MPa提高到160 MPa，其 侵彻深度没有明显的下降；修正后的NDRC经验公式可以很好地预测弹体高速侵彻下超高性能混凝土的侵彻深度，利用量纲分析得到的侵彻深度公式可以为后续的试验预测提供参考。

LÜ Y Q , CHEN N X , WU H J , et al . Mechanism of high-velocity projectile penetrating into ultra-high performance concrete target [J ] Acta Armamentarii , 2022 , 43 ( 1 ): 37 - 47 . (in Chinese) DOI: 10.3969/j.issn.1000-1093.2022.01.005 http://doi.org/10.3969/j.issn.1000-1093.2022.01.005 Ultra-high performance concrete (UHPC) is widely used in the field of protection due to its ultra-high strength and durability. In order to study the phenomenon and laws of projectile penetrating into ultra-high performance concrete, the quasi-static uniaxial compression experiment, split tensile experiment and high-speed penetration experiment of projectile are made on C120 ultra-high performance concrete with 1 vol% steel fibers and C160 ultra-high performance concrete with 2.5 vol% steel fibers. The modified NDRC empirical formula and the empirical formula obtained from dimensional analysis are used to calculate the penetration depths of projectile in the experiments. The results show that the ultra-high performance concrete has a higher tensile-compression ratio and superior ability to resist surface damage of the target compared with ordinary concrete. The area of crater on the surface of target is small, and the crater diameter is about 8-12 times the projectile diameter. The cracks generated in the radial direction are small and short, and the average number of cracks is 4. With the increase in the strength of ultra-high performance concrete, the diameter of crater on the surface of target and the depth of crater decrease, indicating that the addition of steel fiber improves the toughness of the target and reduces the diameter of crater on the surface of target. As compared with ordinary concrete, the penetration depth of ultra-high performance concrete is smaller, but as the strength of target increases, the penetration depth does not decrease significantly. The modified NDRC empirical formula and the empirical formula obtained from dimensional analysis can be used to predict the penetration depth of ultra-high performance concrete under high-speed penetration of projectile.

张雪岩 , 武海军 , 李金柱 , 等 . 弹体高速侵彻两种强度混凝土靶的对比研究 [J ] . 兵工学报 , 2019 , 40 ( 2 ): 276 - 283 . DOI: 10.3969/j.issn.1000-1093.2019.02.007 http://doi.org/10.3969/j.issn.1000-1093.2019.02.007 随着武器系统打击能力的不断提升，高强度混凝土被越来越多地应用到防护设施中。为研究弹体侵彻高强度混凝土的现象和规律，进行了弹体高速侵彻C60高强度混凝土的试验，并与已开展的弹体高速侵彻C35普通强度混凝土试验结果进行对比。采用基于空腔膨胀理论的计算方法、经验侵彻公式法和节点回退法等方法对两组试验中的弹体侵彻深度、弹体侵蚀进行了分析。计算和试验结果表明：相比于弹体侵彻C35混凝土试验，相同速度下侵彻C60混凝土弹体的过载约为其1.8倍，侵彻深度为其52%；C60混凝土靶表面破坏更大，表明随着强度的提高混凝土脆性变大；在骨料切削影响条件相同情况下，侵彻C60混凝土弹体的侵蚀更大，表明高强度混凝土的砂浆对弹体侵蚀作用变大。

ZHANG X Y , WU H J , LI J Z , et al . Comparative study of projectiles penetrating into two kinds of concrete targets at high velocity [J ] . Acta Armamentarii , 2019 , 40 ( 2 ): 276 - 283 . (in Chinese) DOI: 10.3969/j.issn.1000-1093.2019.02.007 http://doi.org/10.3969/j.issn.1000-1093.2019.02.007 With the development of weapon systems, high strength concrete has been applied to the protection facilities. In order to study the phenomenon and law of projectile penetrating into high-strength concrete, the experiment of projectile penetrating into C60 high-strength concrete target is carried out, and the experimental results are compared with those of C35 normal strength concrete. The penetration depth and projectile erosion are analyzed by means of calculation method based on cavity expansion theory, empirical penetration formula method and nodes back-off method. The calculated and experimental results show that the overload of projectile penetrating into C60 concrete is 1.8 times of that of projectile penetrating into C35 concrete, and the penetration depth is 52%. The surface damage of C60 concrete target is greater, indicating that the brittleness of concrete gets larger with the increase of strength. The erosion of projectile penetrating into high strength concrete is more serious in the case of the same aggregate cutting conditions, indicating that the erosion effect of high-strength mortar gets larger. Key

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