CAJ | 학술논문

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AutoDyn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。
위료분석작약대강관적관천파배정황，수선진행상관이론계산，병용불동약량화척촌적TNT진행실폭시험。기우AutoDyn동력분석연건급 Langrange-Euler우합방법，모의료외접촉폭작재하작용하편평TNT장약대대구경강관적파배과정。최후결합시험화모의결과，부석료불동TNT장약량화장약척촌적조건하，강관발생관천파배특정이급파편형성화속도대소，병여이론계산적파편속도진행비교。결과표명：대약량적작약작용우강관상，재접촉부위회발생관천파배，산생비편；관천파배속우전절파배，여장약량、장약척촌등인소유관；산생적파편구유교대동능，기속도여장약고도급장약접촉면적유관；지유합리적설치장약고도화장약여관도적접촉면적，재능체도교호적관천파배효과。
In order to analyze the explosive destruction effect on the steel pipe,the theoretical calculations were conducted. Meanwhile,the TNT explosive with different doses and sizes was applied to the real explosion experiment. Based on the numerical simulation method of coupling AutoDyn and Langrange-Euler,the failure process of large-di-ameter pipe under contact explosion of flat TNT charge was discussed. Finally,combined with TNT test and simula-tion results,the main features of pipe damage were discussed,including the fragment formation process and the frag-ment velocity,which was also compared with the fragments velocity through theoretical calculations with different loading dose size and charge condition. Results showed the steel pipe penetration and fragment produced near the contact area under big charge. Perforation was shear failure,which was related with loading dose and charge size. The fragment momentum was big enough and the speed was affected by charge height and contact area. By reasonable charge size,better destruction effect could be obtained.