混凝土介质中不同药形装药爆炸波传播特性的数值模拟  

Numerical study on the propagation and damage behavior of the blasting wave with differently shaped explosives in concrete

作　　者：赵凯[1] 王肖钧[1] 卞梁[1] 肖卫国[1] 

机构地区：[1]中国科学技术大学力学和机械工程系,安徽合肥230027

出　　处：《中国科学技术大学学报》2007年第7期711-716,共6页JUSTC

基　　金：国家自然科学基金(10402041)资助

摘　　要：利用非线性动力分析软件LS-DYNA3D,选用Johnson-Holmguist-Cook模型对集团装药加载下产生的爆炸波在混凝土介质中的传播问题进行了系列数值模拟,揭示了不同的药形在爆炸近区对混凝土的扩孔效应、爆炸载荷传播特性和混凝土损伤演化特性.模拟结果同时显示在爆炸远区,不同药形装药引起的爆炸波与点源爆炸产生的球面波类似.The propagation of blasting wave driven by differently shaped explosives in concrete was simulated by LS-DYNA with Johnson-Holmquist-Cook constitute model（JHC）. The propagation features of the stress wave and the distribution of damage in concrete were analysed based on the numerical results. They show that the difference in propagation of blast waves and damage distributions due to the shape of explosives is evident in close area of explosion but diminishes with the increase of the distance away from the explosion centre.

关 键 词：爆炸波 传播特性 集团装药 混凝土 数值方法 

分 类 号：O382.2[理学—流体力学]