攻坚战斗部前级装药的优化设计

Optimization Design of Forward Charge for Fortification Warhead

针对攻坚战斗部前级装药侵深兼顾孔径的双重要求,基于80 mm口径装药平台设计正交优化方案,并运用有限元软件AUTODYN进行2维数值模拟,分析攻坚战斗部前级药型罩及隔板结构参数对射流形成及对混凝土靶板侵彻的影响规律。提出用侵彻深度L和无量纲数γ作为评价指标,找出各结构参数对2个指标影响的主次顺序,并获得了药型罩壁厚、罩顶高、隔板厚度、隔板直径等最佳组合,在此基础上进行对钢筋混凝土靶的静态试验。结果表明:数值模拟与试验吻合较好,优化后的侵彻孔径较原结构提高了20%,该方法可为攻坚战斗部装药技术的进一步研究提供参考。

According to the dual requirements of the penetration depth and aperture of the front charge of the fortification warhead,the orthogonal optimization scheme was designed based on the 80 mm caliber charge platform,and the two-dimensional numerical simulation was carried out by using the finite element software AUTODYN to analyze the influence of the structural parameters of the front charge liner and clapboard of the fortification warhead on the jet formation and penetration into the concrete target.The penetration depth L and the dimensionless numberγare proposed as the evaluation indexes,and the order of the influence of the structural parameters on the two indexes is found out,and the best combination of the wall thickness of the liner,the top height of the liner,the thickness of the clapboard and the diameter of the clapboard is obtained.On this basis,the static test of the reinforced concrete target is carried out.The results show that the numerical simulation is in good agreement with the experiment,and the optimized penetration aperture is increased by 20%compared with the original structure.This method can provide a reference for the further study of the charge technology of the fortification warhead.