通过直径9.5 mm钨锆合金球形破片在760~1 300 m/s速度下侵彻10 cm厚C35钢筋混凝土靶的试验,获取了不同冲击速度下钢筋混凝土的成坑及损伤特性。基于数值模拟的方法扩展研究了直径为8~13 mm系列球形破片在着角0°~75°时对钢筋混凝土的侵彻效应。试验和仿真结果表明:随着冲击速度的增加,钨锆破片剩余质量逐渐减少,对钢筋混凝土的侵彻深度逐渐增加,混凝土靶损伤形态由崩落成坑向径向裂纹扩展趋势变化,且靶板背面出现崩落现象;随着钨锆破片质量的增加,混凝土靶崩落成坑和径向裂纹扩展及靶板背面崩落现象逐渐明显;随着破片着角的增大,侵彻深度逐渐减小,有发生跳飞的趋势。研究结果可为战斗部毁伤元结构威力设计提供参考依据。

It is of great significance to study the penetration power of spherical fragments into reinforced concrete fortifications for the evaluation of weapon damage effectiveness. In this paper, the crater formation and damage characteristics of reinforced concrete under different impact speeds are obtained through the test of the 9.5 mm tungsten zirconium alloy spherical fragment penetrating into a 10 cm thick C35 reinforced concrete target at 760~1 300 m/s. Based on the numerical simulation method, the penetration effect of a series of spherical fragments with a diameter of 8~13 mm into reinforced concrete at impact angles 0°~75° is expanded. The test and simulation results show that with the increase of impact velocity, the residual mass of tungsten zirconium fragments gradually decreases, the penetration depth of reinforced concrete gradually increases, the damage pattern of concrete target changes from the crater effect to the radial crack propagation trend, and the back of target plate appears collapse phenomenon; With the increase of tungsten zirconium fragment quality, the cratering effect of concrete target, the radial crack propagation and the back side collapse of target plate gradually become obvious; With the increase of the impact angle of the fragments, the penetration depth gradually decreases, and there is a tendency to jump. The research results can provide reference for the structural power design of warhead damage element.