土壤覆层对混凝土中爆炸毁伤破坏的影响  

Influence of Soil Cladding on Explosion in Concrete

作　　者：刘彦[1] 黄风雷[1] 张振宇[2] 

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081 [2]国防科学技术大学理学院湖南,长沙410073

出　　处：《北京理工大学学报》2007年第9期765-768,共4页Transactions of Beijing Institute of Technology

基　　金：北京理工大学优秀青年教师资助计划项目(000Y02-11)

摘　　要：针对混凝土的破坏模式,把连续损伤模型嵌入LS-DYNA有限元软件中,对炸药在土壤-混凝土复合介质中爆炸时波的传播、混凝土的损伤破坏进行了数值模拟研究,得到了土壤-混凝土界面参数的变化规律以及土壤厚度对混凝土损伤破坏的影响规律.研究结果对于战斗部和防护结构设计以及工程爆破具有一定的参考价值.The numerical simulation for wave propagation with attenuation and damage effect in soil and concrete are performed by using the three-dimension finite element code LS-DYNA, into which the continuum damage model which can well describe the fracture of concrete is implemented. The interfacial parameters of soil and concrete vs. time and location are obtained. The laws of the damage zone of concrete with the thickness of soil are also presented. Numerical results will provide a reference for the design of warhead, the protective structure and engineering blasting.

关 键 词：土壤-混凝土介质 损伤破坏 连续损伤模型 数值模拟 

分 类 号：O382[理学—流体力学]