火工切割装置的爆炸分离数值模拟  

Numerical Simulation on the Explosion Separation of Explosive Cutting Device

作　　者：王通[1] 杨安民[1] 吴瑞德[1] 李琳[1] 郭晓荣[1] 

机构地区：[1]陕西应用物理化学研究所,陕西西安710061

出　　处：《火工品》2015年第6期17-20,共4页Initiators & Pyrotechnics

摘　　要：运用非线性有限元软件ANSYS/LS-DYNA,数值模拟了火工切割装置在雷管装药爆炸载荷作用下爆轰驱动切刀运动,进而切断金属杆的非线性瞬态动力学过程。通过对数值模拟的结果进行分析,得到了雷管装药爆轰波的传播过程、切刀运动以及金属杆切割过程的3D模拟结果;利用LS-PREPOST软件得到了火工切割装置应力及应变分布、切刀冲击加速度和速度、金属杆变形和损伤的时间历程曲线。将数值模拟结果和试验结果进行比较,结果显示所建立的模型很好地模拟了火工切割装置的工作过程。Using the nonlinear finite element software ANSYS / LS-DYNA, the nonlinear transient dynamic process of the explosive cutting device function was numerical simulated. Through analyzing the numerical simulation results, the 3D simulation results of detonation wave propagation process, cutting tool motion and metal rod cutting process were obtained. The software LS-PREPOST was used, then the explosive cutting device stress and strain distribution, cutting knife impact acceleration and velocity, the time history curve of the metal rod deformation and damage were gotten. Numerical simulation results and experimental results are compared. The results showed that the established model simulate the working process of the explosive cutting device well.

关 键 词：火工切割装置 数值模拟 切割 爆炸 

分 类 号：TJ450.2[兵器科学与技术—火炮、自动武器与弹药工程]