冲击片雷管多点同步起爆爆轰波压力的数值模拟和试验

Simulation and Experimental Studies on the Multi-point Synchronization D etonation Overpressure of Slapper D etonators

采用有限元程序AUTODYN软件分别进行了冲击片雷管三点、四点、六点、八点同步起爆爆轰波压力值的数值模拟。分析了影响多点同步起爆爆轰波压力的因素。采用锰铜测压方法测试了多点冲击片雷管的同步起爆爆轰波压力。使用高速摄影系统拍摄了四点冲击片雷管的作用过程。结果表明,四点冲击片雷管的爆轰波压力平均值相比三点、六点、八点高。在中心距为4 mm并且装药量均为180 mg时,四个起爆点产生的爆轰波发生相互碰撞,爆轰波叠加形成超压爆轰,并能可靠起爆钝感炸药TATB。在中心距为8 mm并且装药量均为180 mg时,由于中心距较远,爆轰波衰减较快,相邻两点爆轰波发生的碰撞较少,产生的超压值也随之降低。

The simulation of detonation wave pressure of the three-point, four-point, six-point, eight-point synchronization detonation for slapper detonators were performed respectively by the finite element program AUTODYN software. The factors affecting the detonation wave pressure of multi-point synchronization detonation were analyzed. The detonation wave pressure of multipoint synchronization initiation for slapper detonators was measured by a Manganese Bronze manometry. The action process of four-point synchronization slapper detonators were filmed by a high speed photography system. Results show that a four-point detonation slapper detonators overpressure relative to the average of three-point, six-point, and eight-point is the highest; in the center distance of 4 mm and the same loading dose of 180 mg, the detonation wave generated by four initiation points occurs the collision with each other, and the detonation wave superposition forms overpressure detonation, and can reliably detonate insensitive explosive TATB. In the center distance of 8 mm and the same loading dose of 180 mg, due to center distance is far, detonation wave attenuation is faster, adjacent points detonation wave collision happened is less , the overpressure produced also decreases.