温压药在有限空间内爆炸冲击波的实验研究及数值模拟  

Experiment Study and Numerical Simulation of Shock Wave Generated by Thermobaric Column Exploding in Limited Space

作　　者：陈昊[1] 陶钢[1] 蒲元[1] 

机构地区：[1]南京理工大学动力工程学院,江苏南京210094

出　　处：《火炸药学报》2009年第5期41-45,57,共6页Chinese Journal of Explosives & Propellants

基　　金：国家自然科学基金(10802038)

摘　　要：将温压药柱放在自行设计的两个相互连接的密闭和半密闭房间,测试了在有限空间内爆炸冲击波的传播特性。通过试验和数值计算,得到距炸点不同距离处的超压曲线。结果表明,与开阔空间不同,密闭空间的超压曲线由多峰构成,经分析发现这是由于密闭空间的结构造成的。采用LS-DYNA有限元程序通过与三维数值模拟分析了爆炸冲击波在有限空间内的传播过程,计算结果与试验结果一致。The connected limited and limitless space are designed and the propagation characteristics of shock wave that generated by thermobaric column exploding in limited space is tested. The overpressure curves in different distances are obtained by experiment and numerical simulation. The results show that the overpressure curve of limited space has many peaks, which is different from overpressure curve of limitless space that has only one peak. This phenomenon is caused by the structure of limited space. Through three dimensional numerical simulation using LS-DYNA software, the propagation process in different distances are analyzed. The numerical results are in agreement with the experimental results.

关 键 词：爆炸力学 温压药柱 有限空间 冲击波 数值模拟 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术] TD235.11[自动化与计算机技术—计算机科学与技术]