摘要
阐述的多层介质由半无限的混凝土、土壤层和岩石层组成。采用数值模拟软件LS-DYNA模拟了多层介质中带壳装药在其不同端面起爆时爆炸产生的应力波在半无限混凝土介质中的传播过程,得到了装药不同端面起爆时产生的应力波在混凝土中随时间和位置的变化规律。模拟结果表明,在装药底端面起爆时爆轰能量利用率较高,对混凝土的作用效果较好,为提高装药结构威力设计提供了参考依据。
Regarding a multilayer medium consisting of semi-infinite concrete, soil and rock layers in the article, the paper presented the use of numerical simulation software LS-DYNA in simulation of the course of transmission of stress wave in semi-infinite concrete produced by detonating charge with case at different sections in multiplayer medium, obtaining the transition laws of stress wave with the time-space produced by detonating charge at different sections in concrete. The simulation result showed that the utilization rate of explosion energy when detonating charge at bottom section was in high level, and the damage effect to concrete was better. The numerical results will provide reference to improve the power design of charging structure.
出处
《工程爆破》
2007年第1期20-23,38,共5页
Engineering Blasting
基金
山西省回国人员基金
关键词
混凝土
带壳装药
爆炸
数值模拟
多层介质
Concrete
Charge with case
Explosion
Numerical simulation
Multilayer medium
