CAJ | 학술논문

在基于有限元法中心差分包软件LS-DYNA-970的平台上对圆锥罩型聚能射流侵彻素混凝土试样进行了3-D数值仿真,揭示了金属射流的形成过程和侵彻过程机理。研究表明：装药结构在爆炸荷载作用下能形成头部速度高、弹身长径比大、整体质量分布合理的高速杆式侵彻体。在分析混凝土受力失效过程的同时,获得了金属射流在不同侵彻深度下,混凝土开孔孔径大小的数值结果。计算结果与文献中的实验数据吻合较好。
재기우유한원법중심차분포연건LS-DYNA-970적평태상대원추조형취능사류침철소혼응토시양진행료3-D수치방진,게시료금속사류적형성과정화침철과정궤리。연구표명：장약결구재폭작하재작용하능형성두부속도고、탄신장경비대、정체질량분포합리적고속간식침철체。재분석혼응토수력실효과정적동시,획득료금속사류재불동침철심도하,혼응토개공공경대소적수치결과。계산결과여문헌중적실험수거문합교호。
Based on the platform of center difference packet LS-DYNA-970 of finit element method,the paper made the 3D numerical simulation of concrete sample penetrated by cohesive energy jet-flow for taper cover.It revealed the formed process of metal jet-flow and the mechanism of penetration process.The related research showed that under the action of explosion load the installed explosive structure could form the penetration body of high speed staff in which it is high in head speed,large in ratio of bullet length to diameter,and reasonable in whole mass distribution.At the same time of analyzing the force failure process of concrete,it obtained the numerical result of bore diameter size for concrete under different penetration depth for metal jet-flow.The research results show that it fits better in comparison between computing result and experiment data in literature.