壁厚对泡沫铝填充钢管的抗爆性能数值模拟研究  

Numerical Simulation of Anti-explosion Performance to the Different Thickness of Steel Pipe Filled with Aluminum

作　　者：李顺波[1] 杨军[1] 夏晨曦[1] 

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

出　　处：《应用基础与工程科学学报》2012年第6期1014-1021,共8页Journal of Basic Science and Engineering

摘　　要：为了研究壁厚对钢管泡沫铝填充结构在水中抗爆炸冲击性能,利用ANSYS/LS-DYNA对不同壁厚的钢管泡沫铝填充结构进行了数值模拟,比较了不同厚度情况下的数值模拟结果.结果表明,通过和经验公式计算结果对比,水下爆炸冲击波压力值和经验公式计算值二者接近,随着钢管壁厚的增加,钢管在水下爆炸冲击波作用下的挠度变形明显减小,钢管抗变形能力提高,泡沫铝中的压力和动能不断减小,在同一爆炸冲击波强度作用下,钢管壁厚和填充的泡沫铝之间存在一个合理的设计值,使钢管和泡沫铝的抗爆炸冲击性能都得到最大的利用.To study the thickness of the steel tube filled with aluminum foam structure of anti- explosion performance in the water, different thickness of steel pipes filled with aluminum foam structure was simulated using ANSYS/LS-DYNA, the different thickness of numerical simulation results was compared. The results showed that the calculated results and the underwater shock wave experience formula was compared, and the value of the numerical simulation close to the empirical formula, with the thickness of steel pipe increase, steel pipe significantly reduced deflection when underwater explosion shock waves, the deformation of steel pipe increased. The pressure and kinetic energy grow down in aluminum foam, under the same shock wave intensity, the thickness of steel pipe and aluminum foam between a reasonable design values, so that the steel pipe and aluminum foam are anti-explosion performance get the maximum use.

关 键 词：泡沫铝 钢管 冲击波 数值模拟 

分 类 号：O38[理学—流体力学]