扁平装药对钢管贯穿破坏的数值模拟Simulation of Perforation Effect of Flat Charge on Steel Pipe
孙杰,方向,谢立军,郭方
摘要(Abstract):
为了分析炸药对钢管的贯穿破坏情况,首先进行相关理论计算,并用不同药量和尺寸的TNT进行实爆试验。基于Auto Dyn动力分析软件及Langrange-Euler耦合方法,模拟了外接触爆炸载荷作用下扁平TNT装药对大口径钢管的破坏过程。最后结合试验和模拟结果,剖析了不同TNT装药量和装药尺寸的条件下,钢管发生贯穿破坏特征以及破片形成和速度大小,并与理论计算的破片速度进行比较。结果表明:大药量的炸药作用于钢管上,在接触部位会发生贯穿破坏,产生飞片;贯穿破坏属于剪切破坏,与装药量、装药尺寸等因素有关;产生的破片具有较大动能,其速度与装药高度及装药接触面积有关;只有合理的设置装药高度和装药与管道的接触面积,才能达到较好的贯穿破坏效果。
关键词(KeyWords): 扁平装药;接触爆炸;贯穿;数值模拟;破片
基金项目(Foundation): 爆炸科学与技术国家重点实验室开放基金(KFJJ12-18M);; 中国博士后科学基金(20100471823);; 江苏省博士后科研基金(1102147c)
作者(Author): 孙杰,方向,谢立军,郭方
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