爆炸二极管的数值模拟设计  

Numerical Simulation and Design of Explosive Diode

作　　者：崔宇[1,2] 马宏昊[1,2] 沈兆武[1,2] 任丽杰[1,2] 杨明[1,2] 余勇[1,2] 

机构地区：[1]中国科学院材料力学行为和设计重点实验室,安徽合肥230026 [2]中国科学技术大学,安徽合肥230026

出　　处：《含能材料》2017年第4期266-272,共7页Chinese Journal of Energetic Materials

基　　金：国家自然科学基金(51374189);中央高校基金科研业务费专项资金(WK6030000003);金属矿山安全与健康国家重点实验室开放课题(Jskszdsys-2015-03)

摘　　要：针对工业上起爆网路早爆问题,采用数值模拟方法设计并研制了一种具有单向传爆功能的爆炸二极管。利用点火增长模型结合ANSYS/LS-DYNA有限元软件,通过调整激发药药量方式进行了正向冲击起爆模拟,采用调整延期体长度进行反向隔爆仿真模拟,最后通过正反对称实验以及飞片测速实验进行可行性验证。结果表明:该爆炸二极管可以正向稳定传递爆轰信号以及反向可靠阻断爆轰信号,而且激发药药量和延期体长度有一定范围值,其中激发药药量大于30 mg,而30 mg激发药药量下延期体长于4.0 mm。Aiming at the problem about early blasting of the detonating network in industry, a type of irreversible detonation explosive diode was designed and develop by numerical simulation method. Using the combination of ignition and growth model and ANSYS/LS-DYNA finite element software are transmitting positive detonation was simulated by various mass of the firing charge and the stopping backward detonation was simulated by various length of the delay element. Then the feasibility was validated by the positive and negative symmetry experiment and the velocity measurement of flying plane. Results show that the explosive diode can achieve the aims of successful transmitting positive detonationsignal and stopping backward detonation signal and that the mass of firing charge and the length of linear delay elements must be limited. The least mass of firing charge is 30 mg and the minimum length of delay elements is 4 mm at 30 mg firing charge.

关 键 词：爆炸二极管 冲击起爆 阻爆 激发药 线延期体 

分 类 号：TQ560.1[化学工程—炸药化工]