摘要
在爆炸冲击毁伤效应的研究中,钢筋混凝土结构在爆炸冲击载荷作用下的动态响应分析是其中的重要内容,也是靶场试验的重要组成部分。为了减少试验成本和降低试验风险,采用数值仿真的方法对钢筋混凝土箱型结构在爆炸冲击载荷下产生的复杂力学问题进行研究。建立涵盖钢筋混凝土模型、炸药模型、空气模型以及材料失效模型等在内的有限元分析模型,利用带罚函数的流固耦合算法研究箱型结构在内部爆炸冲击载荷作用下的动态响应过程,着重分析墙壁不同测点处振动加速度变化规律,仿真结果与实际情况具有较好的一致性。
It is the important content of damage effect studying and is an important part of the range test to analyze the dynamic response of reinforced concrete structure under blast load. A numerical simulation method is used to study the complicated mechanics problems of box type reinforced concrete structure generated by blast load. A finite element model is built,which includes reinforced concrete model,explosive model,air model and material failure model. The dynamic response process of box type structure is studied under the internal blast load by using the fluid structure interaction algorithm with penalty function. And the vibration acceleration law is emphatically analyzed in different points of wall. The simulation results show good consistency with the actual situation.
出处
《计算机仿真》
CSCD
北大核心
2016年第2期27-31,共5页
Computer Simulation
关键词
爆炸
混凝土
流固耦合
有限元分析
Blast
Concrete
Fluid structure interaction
Finite element analysis
