CAJ | 학술논문

基于显式动力分析软件LS-DYNA，利用SPH方法对圆柱型装药爆轰问题进行了数值模拟，计算结果表明SPH方法可以准确模拟炸药爆轰及产物膨胀飞散过程。在此基础上建立了圆柱型装药与钢板接触爆炸的三维数值计算模型，分析了接触爆炸荷载作用下钢板的动力响应问题，模拟结果直观显示了接触爆炸作用下钢板发生层裂和穿孔破坏的过程；进行了等比例圆柱型装药与钢板接触爆炸试验，数值计算结果与试验结果符合较好，说明SPH方法可以准确描述爆炸作用下结构的动力响应。
기우현식동력분석연건LS-DYNA，이용SPH방법대원주형장약폭굉문제진행료수치모의，계산결과표명SPH방법가이준학모의작약폭굉급산물팽창비산과정。재차기출상건립료원주형장약여강판접촉폭작적삼유수치계산모형，분석료접촉폭작하재작용하강판적동력향응문제，모의결과직관현시료접촉폭작작용하강판발생층렬화천공파배적과정；진행료등비례원주형장약여강판접촉폭작시험，수치계산결과여시험결과부합교호，설명SPH방법가이준학묘술폭작작용하결구적동력향응。
Based on the finite element analysis software LS-DYNA, the detonation of cylinder charge was analyzed by the SPH method. The simulation results show that the SPH method could simulate the process of detonation and the process of dispersion of the detonation products efficiently. The 3D model of the cylinder charge and the steel plate in contact with the explosive load was set up,and the dynamic response of the steel plate was analyzed. The results show the destruction process of the slabbing and the punching of the steel plate explicitly. Same-sized experiment of the steel plate under the contact explosion load was performed. The results of the simulation and the experiment data are in good agreement,indicating that the SPH method can accurately describe the explosion and the dynamic responses of the structure under the explosion load.