【摘要】 为研究爆轰驱动引发的形变对球形钨破片侵彻性能的影响，开展破片回收与侵彻装甲钢靶静爆试验，基于试验结果开展形变破片侵彻装甲钢数值仿真，获得了形变破片以不同姿态着靶侵彻规律，揭示了破片形变对侵彻性能影响机理。研究结果表明：钨合金球形破片在爆轰驱动后质量降低9.35%,形状变为子弹头形；侵彻过程中，破片与靶板接触的最大截面越大、边缘尖角越多，穿孔入口直径越大；破片头部越尖锐、最大截面积越小，破片剩余速度越大。不同着靶姿态下，破片剩余速度、剩余质量、剩余动能最大值比最小值分别高36.0%、111.6%与291.1%。研究为球形预制破片战斗部的优化设计提供了依据。更多还原

【Abstract】 The influence of deformation of spherical tungsten fragment induced by detonation on its penetration performance is investigated The fragment recovery and static explosion tests are conducted on armor steel targets.The numerical simulation of deformed fragments penetrating armor steel is performed based on the experimental results.The penetration behaviors of deformed fragments at different impact attitudes are revealed and the mechanism how the fragment deformation affects penetration performance is clarified through numerical simulation.The results indicate that the spherical tungsten alloy fragments experience a mass loss of 9.35% and assume a “bullet-head” shape after detonation driving.During penetration, a larger maximum contact cross-section between the fragment and the target plate and more sharp edges result in a larger perforating diameter.A sharper fragment head and a smaller maximum cross-sectional area led to a higher residual velocity of fragment.Under different impact attitudes, the maximum residual velocity, mass and kinetic energy of the fragment are 36.0%,111.6% and 291.1% higher than the minimums, respectively.This study provides a basis for the optimization of spherical prefabricated fragment warheads.更多还原