含能材料2025，Vol.33Issue(7)：689-702,14.DOI:10.11943/CJEM2025079
活性射流侵彻-内爆作用下半无限混凝土靶中应力波效应
Stress Wave Effect in Semi-Infinite Concrete Targets Subjected to Penetration-Implosion Action of Reactive Jet
摘要
Abstract
To investigate the stress wave effect in semi-infinite concrete targets under penetration-implosion loadings induced by reactive jet(RJ),two sets of RJ peneration-implosion experiments were conducted to obtain stress wave data and characteristic damage patterns of concrete targets.LS-DYNA software combined with a restart algorithm was used for staged numerical simula-tions of the penetration-implosion process,and to analyze the stress wave propagation characteristics in concrete under the com-bined action of RJ penetration and explosion.The findings demonstrate that numerical and experimental results showed good agreement in stress waves and target damage features.During the penetration stage of RJ,concrete failure occurs after successive loadings of dynamic stress wave zone and static high-pressure zone,with the latter having a faster loading rate but a shorter ac-tion duration.The concrete damage caused by RJ penetration accelerates energy dissipation,reduces peak stress during the ex-plosion stage,but accelerates stress wave propagation.Compared with the undamaged target,the peak stress of the explosion in the target after RJ penetration decreased by up to 47%,and the growth rate of the stress wave propagation speed could reache up to 7%.However,when the depth of measuring point exceeds 335 mm,the influence of RJ penetration on the explosion stage can be ignored.关键词
活性射流/半无限混凝土靶/应力波效应/侵彻爆炸Key words
reactive jet/semi-infinite concrete target/stress wave effect/penetration-implosion分类
军事科技引用本文复制引用
周鑫,冯彬,陈力,王瑞琪,李裕春..活性射流侵彻-内爆作用下半无限混凝土靶中应力波效应[J].含能材料,2025,33(7):689-702,14.基金项目
国家自然科学基金(52378487,52378488) National Natural Science Foundation of China(Nos.52378487,52378488) （52378487,52378488）
