摘要
为准确模拟氟聚物基活性材料在侵彻弹中的应用及其对目标的毁伤过程,基于氟聚物基活性材料的冲击失效起爆机理,采用自适应有限元法(Finite Element Method, FEM)-光滑粒子流体动力学(Smoothed Particle Hydrodynamics, SPH)耦合方法,实现活性材料冲击-失效-爆燃的全过程数值建模。通过模拟不同速度条件下活性破片对双层铝靶的侵彻与毁伤过程,并结合实验结果验证了仿真方法的有效性与可靠性。研究结果表明:FEM-SPH耦合方法和点火增长方程的使用能够再现活性破片侵彻靶板及其后效爆燃的毁伤过程,清晰反映出冲击反应、二次碰撞剧烈反应等动态响应特征;所建仿真模型可为氟聚物基活性材料在破片和侵彻类弹药中的结构设计、效能评估与优化提供数值分析依据和方法支持。
A adaptive finite element method-smoothed particle hydrodynamics(FEM-SPH)coupling method is employed to accurately simulate the application of fluoropolymer-based reactive materials in penetrator and their damage process against targets based on the impact-induced failure and initiation mechanism of fluoropolymer-based reactive materials.The entire impact-failure-deflagration process of the reactive materials is numerically modeled.The penetration and damage processes of reactive fragments against double-layer aluminum targets under different velocities are simulated,and the validity and reliability of the simulation method are verified by comparing the simulated results with the experimental data.The results demonstrate that the FEM-SPH method and the ignition and growth model are used to effectively reproduce the damage process of reactive fragments penetrating a target and their subsequent deflagration effects,clearly reflecting the dynamic response characteristics such as impact-induced reactions and intense secondary collision reactions.The proposed simulation model provides a numerical analysis basis and methodological support for the structural design,performance evaluation,and optimization of fluoropolymer-based reactive materials in fragment and penetrating ammunition.
作者
李沛豫
张甲浩
卢冠成
郑元枫
葛超
余庆波
LI Peiyu;ZHANG Jiahao;LU Guancheng;ZHENG Yuanfeng;GE Chao;YU Qingbo(State Key Laboratory of Explosion Science and Safety Protection,Beijing Institute of Technology,Beijing 100081,China;China North Industries Corporation,Beijing 100053,China)
出处
《兵工学报》
北大核心
2025年第12期129-138,共10页
Acta Armamentarii
基金
国家自然科学基金项目(124B2050、12172052、12302460)。
