摘要
依靠SHPB技术,建立了高强度船用钢的C-S模型。对承受冲击因子3.7水下非接触爆炸载荷的结构,基于流固耦合理论,利用6种C-S模型,分别建立动态有限元模型进行非接触爆炸数值仿真,研究了C-S模型参数对仿真结果的影响。研究指出:无论是通过冲击压缩试验还是冲击拉伸试验获得的C-S模型参数,均可获得满意的仿真分析精度;C-S模型参数正确与否,将严重影响结构抗爆性能评估结论的正确性。
Using SHPB experimental technique,the C-S constitutive model of a high strength ship building steel is established.Adopting six kinds of C-S constitute model and the fluid-solid coupling theory,the corresponding finite element model of a structure subjected to a non-contact explosive load is built up and its explosion response simulation is carried out subsequently with the impact factor of the explosion load being 3.7.Furthermore,the influence of the C-S constitutive model parameter on the simulation results is discussed.It is proved that the C-S constitutive model parameter with satisfactory simulation accuracy can be obtained either by the impact extension test or by compress test.Whether the C-S parameter is correct or not will influence the correctness of the anti-explosion evaluation seriously.
出处
《振动与冲击》
EI
CSCD
北大核心
2008年第6期60-63,117,共5页
Journal of Vibration and Shock
关键词
水下结构
非接触爆炸
数值仿真
C—S模型
高强度船用钢
underwater structure
non-contact explosion
numerical simulation
C-S constitute model
high strength ship building steel
作者简介
陈志坚男，教授，1957年生
