Strategic Study of CAE >> 2007, Volume 9, Issue 4
Research on the Buffering Effect of Flexible Materialon the Explosive Loading
1. University of Science and Technology of China, Hefei 230027, China ;
2. National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China
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Abstract
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.
Keywords
flexible material ; explosive loading ; load remodeling ; numerical simulation
References
[ 1 ] Kirkpatrick S . W ., Holmes B S . Structural Response of Thin Cylindrical Shells Subjected to Impulsive External Loads [J] .AIAA Journal ,1988 ,26 (1) :96 link1
[ 2 ] 李雪梅 ,金孝刚 ,李大红 ,等 .液体炸药滑移内爆 加载下钢管的变形与层裂破坏研究[J] .爆炸与冲 击 ,2003 ,23(6) :523 ~ 528 link1
[ 3 ] 李雪梅 ,金孝刚 ,李大红 .钢圆管在内爆加载下的 层裂特性研究[J] .爆炸与冲击 ,2003 ,25(2) :107 ~ 111 link1
[ 4 ] 赵国民 ,张若棋 ,彭常贤 ,等 .铅壳柔爆索爆炸产 生冲量的实验[J] . 国防科技大学学报 , 2001 , 23 (6) :58 ~ 62 link1
[ 5 ] 赵国民 ,张若棋 ,彭常贤 ,等 .铅壳柔爆索冲量作 用下圆柱壳体结构响应实验研究 [J] .爆炸与冲击 , 2002 ,22(2) :126 ~ 131 link1
[ 6 ] 李永池 ,李大红 ,魏志刚 ,等 .内爆炸载荷下圆管 变形 、损伤和破坏规律的研究[J] .力学学报 ,1999 , 31(4) :442 ~ 449 link1