柔性材料对爆炸载荷的缓冲效应研究  

Research on the Buffering Effect of Flexible Material on the Explosive Loading

作　　者：于少娟[1] 李永池[1] 刘颢文[1] 孙宇新[2] 胡秀章[1] 

机构地区：[1]中国科学技术大学力学系,合肥230027 [2]南京理工大学瞬态物理国家重点实验室,南京210094

出　　处：《中国工程科学》2007年第4期75-78,共4页Strategic Study of CAE

基　　金：国家自然科学基金资助项目(10402041)

摘　　要：建立了柔性材料/钢复合壳体在爆炸载荷作用下应力波传播问题的完备方程组;使用有限元方法完成了对复合壳体在爆炸载荷作用下应力波传播规律的系列数值模拟,并着重讨论了不同炸药层和柔性材料层厚度对柔性材料与钢交界面载荷的影响。In this paper, on the basis of the constitutive relation theory which includes inner variables, with the general explicit description of incremental strain thermal-plastic constitutive relations and the specific incremental thermal-plastic constitutive relations, combining the simulation of X ray load and the tube responsing problem which is greatly important in practice, the self-contained equation group about the stress wave in the flexible material-steel composite shell problem is developed. Numerical simulations are carried out with the presented constitutive relations for explosive-filled sphere fracture problem and the results are analyzed. The thickness of explosive and flexible material that influences the load of the interface is discussed emphatically.

关 键 词：柔性材料 爆炸载荷 载荷改造 数值模拟 

分 类 号：O346[理学—固体力学]