活性药型罩聚能装药作用混凝土靶毁伤效应

采用数值模拟和地面静爆实验相结合的方法，对活性药型罩聚能装药作用混凝土靶毁伤效应问题进行了研究.在Autodyn数值模拟中，活性药型罩爆炸驱动形成射流及侵彻混凝土靶过程采用二维欧拉算法，活性射流侵入混凝土内爆破过程采用三维SPH算法，活性射流冲击反应由Powder Burn模型描述，通过算法转换实现分步连续数值模拟.数值模拟结果表明，与金属射流相比，活性射流终点效应受炸高的影响更敏感，在约为1.0倍装药直径炸高下，活性射流可显著发挥侵爆联合毁伤优势，有效爆破深度约为6.5倍装药直径，当炸高超过2.0倍装药直径后，侵爆毁伤效应显著减弱.进一步与地面静爆实验结果相比，两者基本相吻合，验证了数值模拟的有效性. 

Demolition Effect of Reactive Material Liner Shaped Charge Against Concrete Target

Demolition effect of reactive material liner shaped charge against concrete targets was studied with a method combining numerical simulation and ground-based experiment. In the Autodyn simulation, both the formation of reactive material jet and its penetration process were simulated by Euler-2D solver, whereas SPH-3D solver was used for the demolition effect of reactive material jet. The Powder Burn model was employed to describe the deflagration behavior of reactive materials. The whole numerical simulation process was implemented by an Euler to SPH solver transition. The simulation results show that, the influence of stand-off on terminal effect of reactive material jet is greater than that of metal jet. The dramatic demolition effect produced by a combination of penetration and deflagration was achieved at one charge diameter stand-off, corresponding to an effective demolition depth approximate to 6.5 charge diameter. When increasing stand-off beyond two charge diameter, however, the demolition effect of reactive material jet drops off significantly. Moreover, the ground-based experiments are also conducted, and the results show a good fit with numerical simulations.