爆炸与冲击2025，Vol.45Issue(5)：1-16,16.DOI:10.11883/bzycj-2024-0244
基于战斗部侵彻动爆一体化效应的遮弹层设计
Design of shield based on integrated effect of penetration and moving charge explosion of warheads
摘要
Abstract
Accurately evaluating the continuous effect of penetration and moving charge explosion of earth penetrating weapons is the premise of reliable design of shield on the protective structure.Firstly,a three-stage integrated projectile penetration and moving charge explosion finite element analysis method was proposed based on the technologies of volume filling of explosive and the two-step coupling in penetration and explosion processes.By conducting the numerical simulations of the existing tests of moving charge explosion,penetration and static charge explosion of normal strength concrete(NSC)and ultra-high performance concrete(UHPC)targets,the accuracy of the proposed method in describing the propagation of explosive waves,peak stress,cracking behavior and damage evolution of target under the penetration and explosion was fully verified.Besides,for the scenario of an NSC target against a 105 mm-caliber scaled projectile,the differences of target damage predicted by the proposed finite element analysis method and traditional penetration and static charge explosion method were compared.Meanwhile,the superimposed effect of the penetration and explosion stress field and the influence of shell constraint and fracture fragment were analyzed.Based on the damage characteristics of targets at different detonation time instants of explosive,the most unfavorable detonation time instant of the warhead was determined.Finally,numerical simulations were conducted for the scenarios of three prototype warheads:SDB,WDU-43/B and BLU-109/B.The destructive depths of NSC and UHPC shields subjected to the penetration and moving charge explosion loadings are 1.33,2.70,2.35 m and 0.79,1.76,1.70 m,respectively.The corresponding scabbing and perforation limits of shields were further given.The results show that the destructive depths,scabbing limits and perforation limits calculated by the finite element analysis method with considering integrated penetration and moving charge explosion are about 5%-30%higher than those calculated by the traditional penetration and static charge explosion method.关键词
侵彻动爆/混凝土遮弹层/临界震塌厚度/临界贯穿厚度/防护设计Key words
penetration and moving charge explosion/concrete shield/scabbing limit/perforation limit/protective design分类
力学引用本文复制引用
吴昊,岑国华,程月华,张瑜..基于战斗部侵彻动爆一体化效应的遮弹层设计[J].爆炸与冲击,2025,45(5):1-16,16.基金项目
国家自然科学基金(52308522) （52308522）
工程材料与结构冲击振动四川省重点实验室开放基金(23kfgk01) （23kfgk01）
