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周晟 , 张甲浩 , 余庆波 . 金属基活性破片侵彻间隔铝靶作用行为 [J ] . 兵工学报 , 2023 , 44 ( 8 ): 2263 - 2272 . DOI: 10.12382/bgxb.2022.0232 http://doi.org/10.12382/bgxb.2022.0232 为揭示活性破片穿靶毁伤机理,研究活性破片靶后碎片云与毁伤效应行为,开展了金属基活性破片侵彻间隔铝靶弹道枪实验。通过观察间隔铝靶穿孔模式与弹靶作用行为高速摄像,结合破片侵靶破碎理论、能量守恒定律和活性破片激活响应行为,分析活性破片侵彻间隔铝靶作用行为。研究结果表明:球形活性破片侵彻间隔铝靶时,对前靶造成冲塞毁伤,靶后形成碎片云对后靶造成动能-化学能耦合毁伤,后靶毁伤主要呈现为中心贯穿和碎片撞击复合模式,活性破片激活程度随碰撞速度增加呈增大趋势:建立了活性破片靶后碎片云理论模型,获得了碎片云演化规律,在不同碰撞速度下,临界贯穿孔径位置处的单位碎片动能与单位反应质量呈负相关关系。

ZHOU S , ZHANG J H , YU Q B . Behaviors of metal-based reactive fragments penetrating spaced aluminum targets [J ] . Acta Armamentarii , 2023 , 44 ( 8 ): 2263 - 2272 . (in Chinese) DOI: 10.12382/bgxb.2022.0232 http://doi.org/10.12382/bgxb.2022.0232 Ballistic impact experiments are conducted on metal-based reactive fragments impacting spaced targets to investigate the post-target debris cloud and damage effect behaviors of the reactive fragments, and to reveal the mechanism of their penetration. By observing the perforation mode of spaced target and the action behavior of fragments, we combine the breakage theory of target penetration, energy conservation law, and the reactivation response behaviors of reactive fragments to analyze and discuss the behaviors of reactive fragments penetrating spacer aluminum targets. The results show that the front target is plugging, and the rear target mainly presents the composite mode of center penetration and debris impact due to the kinetic energy-chemical energy coupling damage of post-target debris cloud. With increasing impact velocity, the reactive of reactive fragments increases. The theoretical model of the reactive fragments’ post-target debris cloud is established, and the evolution law of debris cloud is obtained. At different impact velocities, the unit debris kinetic energy is negatively correlated with unit reaction mass at the position of the critical through aperture.

WANG H F , XIE J W , GE C , et al . Experimental investigation on enhanced damage to fuel tanks by reactive projectiles impact [J ] . Defence Technology , 2021 , 17 ( 2 ): 599 - 608 . DOI: 10.1016/j.dt.2020.03.017 http://doi.org/10.1016/j.dt.2020.03.017 Enhanced damage to the full-filled fuel tank, impacted by the cold pressed and sintered PTFE/Al/W reactive material projectile (RMP) with a density of 7.8 g/cm3, is investigated experimentally and theoretically. The fuel tank is a rectangular structure, welded by six pieces of 2024 aluminum plate with a thickness of 6 mm, and filled with RP-3 aviation kerosene. Experimental results show that the kerosene is ignited by the RMP impact at a velocity above 1062 m/s, and a novel interior ignition phenomenon which is closely related to the rupture effect of the fuel tank is observed. However, the traditional steel projectile with the same mass and dimension requires a velocity up to 1649 m/s to ignite the kerosene. Based on the experimental results, the radial pressure field is considered to be the main reason for the shear failure of weld. For mechanism considerations, the chemical energy released by the RMP enhances the hydrodynamic ram (HRAM) effect and provides additional ignition sources inside the fuel tank, thereby enhancing both rupture and ignition effects. Moreover, to further understand the enhanced ignition effect of RMP, the reactive debris temperature inside the kerosene is analyzed theoretically. The initiated reactive debris with high temperature provides effective interior ignition sources to ignite the kerosene, resulting in the enhanced ignition of the kerosene. © 2020 The Authors

谢剑文 , 李沛豫 , 王海福 , 等 . 活性破片撞击油箱毁伤行为与机理 [J ] . 兵工学报 , 2022 , 43 ( 7 ): 1565 - 1577 . DOI: 10.12382/bgxb.2021.0384 http://doi.org/10.12382/bgxb.2021.0384 为分析活性破片动能与化学能耦合作用下的引燃毁伤行为，开展活性破片作用油箱毁伤效应研究。采用实验与理论分析相结合的方法，对活性破片作用于不同注油量油箱典型毁伤模式及毁伤机理进行探究。实验结果表明：活性破片作用于非满油油箱时，806~1 331 m/s速度下活性破片均引发油箱内油气层闪燃，但液体燃油均未发生持续燃烧；活性破片作用于满油油箱时，若撞击速度从855 m/s增加至1 225 m/s，则典型毁伤模式依次为油箱穿孔、焊缝开裂、泄漏燃烧和解体燃烧。基于实验结果与活性材料冲击响应特性，揭示了活性破片作用油箱毁伤机理；结合活性材料能量释放特性，建立了满油油箱结构失效分析模型，模型结果与实验结果吻合较好。

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