金属飞片起爆间隙对TATB基炸药到爆轰距离的影响

打开文本图片集

中图分类号：O381；TJ55 国标学科代码：13035 文献标志码：A

Abstract：Todiscusstheflyinggapeffectof themetalflyerontheinitiating behaviorforTATB-basedexplosives，nitiation experiments for PBX-6and PBXL-7were performed.The target velocityand shape oftheflyer to explosives were obtained using a 1 5 5 0 n m photon Doppler velocimetry. The running distance to detonation （RDTD） of explosive samples was gained byaTerahertz-wave Doppler interferometricvelocimetryatthecenter point.Therelationship between theexperiment data captured above was analyzed.It reveals that the running distance to detonation of the TATB-based explosive changes nonmonotonously with the increase of gap. With the gap increasing from zero to 2 0 m m ，there are five stages.The initial stage is named S0，theflyer velocitydecliningstage is named S1，thefreerunning stage ofspalationis named S2，theremergingstage whenthe main flyer catches up and remerging with its spalation layer is named S3，and the stage when the main flyer and spalation are united asone is named S4.The RDTD for the TATB-based explosiveis the smalest when the flyer velocity comes to stage S4，theRDTDat stage SOis the next，and theRDTDat the velocitydeclining stage S1and remerging stage S3 arethe worst together.These experiment results suggst thatthe initiating performanceofTATB-based explosives impacted by theflyer is notalwaysbeterthanthegaplayerresults.The initiationmechanismofexplosives byflyerunder diferent gaps is probably relatedtothetarget velocitytogether with the structure oftheflyer.The simplex target velocityrising offlyercan't always make the running distance to detonation ofTATB-based explosives shorter.The initiation mechanism ofTATB-based explosives impacted by flyeris more complex than the gap layer，requiring much experiment data and numerical simulation for further discussion.

Keywords： TATB-based explosive; running distance to detonation; gap size; flyer velocity

飞片起爆炸药是一种高可靠的起爆方式，可以通过多级增压技术[1-2]获取比接触起爆更高的冲击压力，从而提升下级装药的起爆可靠性[3-5]，在武器装药爆炸序列中有着较为广泛的应用。（剩余9464字）