Hao Zhiwei, Wang Zhijun, Xu Yongjie, Duan Conghui, Wang Yifan
College of Mechanical and Electrical Engineering, North University of China, Taiyuan, 030051, China.
Chongqing Hongyu Precision Industrial Co.,Ltd., P.O.Box 402760, Chongqing, People's Republic of China.
Sci Rep. 2024 Apr 16;14(1):8778. doi: 10.1038/s41598-024-59402-y.
With the continuous improvement of various armor protection technologies, the armor protection performance has increased significantly, and then the damage performance requirements of armor-piercing ammunition have also increased. In order to improve the penetration ability of the liner, a new three-layer liner structure is designed in this paper. The jet forming process was simulated by AUTODYN software. The mechanism of shaped jet forming of three-layer liner was studied. The reason why the penetration depth of three-layer liner was higher than that of ordinary liner was explained. The influence of three-layer liner on the propagation of detonation wave and the change of pressure when detonation wave acted on liner were found, which provided a new idea for improving the penetration depth of jet. The influence of liner material, cone angle and stand-off on jet forming and penetration was also studied by orthogonal optimization experiment, and the structural parameters with the best penetration performance were obtained. The results show that the pressure at the convergence point increases first and then decreases during the formation of the jet of the three-layer liner. The pressure at the convergence point when the three-layer liner material is from low impedance to high impedance from the outside to the inside is much larger than the pressure at the convergence point from high impedance to low impedance. When the three-layer liner material is Al 2024-Copper-Tantalum from the outside to the inside, the pressure at the convergence point of the three-layer liner at different times is higher than that of the double-layer liner and the single-layer liner. Reasonable matching of different impact impedance materials in the three-layer liner can greatly improve the pressure value of the detonation wave acting on the cone liner. The maximum pressure at the convergence point on the axis is 39.10 GPa, which is 22.00% higher than that of the double-layer liner at the convergence point, and 53.03% higher than that of the single-layer liner at the convergence point. The orthogonal design test scheme is simulated and analyzed. The penetration depth is taken as the observation index, and the range analysis is adopted. The results show that the material matching of the three-layer liner has the greatest influence on the depth of the jet penetrating the target plate, followed by the cone angle of the three-layer liner. Relatively speaking, the stand-off has the least influence on the result. Reasonable matching of materials with different impact impedances in the three-layer liner can maximize the penetration depth of the jet into the target plate.
随着各种装甲防护技术的不断提高，装甲防护性能显著提升，进而对穿甲弹药的毁伤性能要求也相应提高。为提高药型罩的侵彻能力，本文设计了一种新型三层药型罩结构。利用AUTODYN软件对射流形成过程进行了模拟。研究了三层药型罩聚能射流形成的机理。解释了三层药型罩侵彻深度高于普通药型罩的原因。发现了三层药型罩对爆轰波传播的影响以及爆轰波作用于药型罩时压力的变化情况，为提高射流侵彻深度提供了新思路。通过正交优化试验研究了药型罩材料、锥角和炸高对射流形成及侵彻的影响，得到了侵彻性能最佳的结构参数。结果表明，三层药型罩射流形成过程中汇聚点压力先增大后减小。三层药型罩材料由外向内从低阻抗到高阻抗时汇聚点压力远大于由高阻抗到低阻抗时的汇聚点压力。当三层药型罩材料由外向内为Al 2024-铜-钽时，三层药型罩在不同时刻的汇聚点压力均高于双层药型罩和单层药型罩。三层药型罩中不同冲击阻抗材料的合理匹配可大幅提高爆轰波作用于锥形药型罩的压力值。轴线上汇聚点的最大压力为39.10 GPa，比双层药型罩汇聚点压力高22.00%，比单层药型罩汇聚点压力高53.03%。对正交设计试验方案进行了模拟分析，以侵彻深度为观测指标，采用极差分析。结果表明，三层药型罩的材料匹配对射流穿透靶板的深度影响最大，其次是三层药型罩的锥角。相对而言，炸高对结果的影响最小。三层药型罩中不同冲击阻抗材料的合理匹配可使射流对靶板的侵彻深度最大化。
