装药结构中纵向气隙对炸药爆轰输出性能的影响

打开文本图片集

中图分类号：0381 国标学科代码：13035 文献标志码：A

Abstract：To investigate theeectof thelongitudinalair gaponthe detonation performanceof HMX-based explosive，direct observationof stee plate deformationand damage under forwardand slipping detonationof HMX based explosive was conductedbasedonthe laserillumination combined withthe ultra-high speed framing imaging technology.The multi-position optical speed measurement technology was also introduced to continuously measure the speedofsteel plate，which enables a multidimensional characterizationand quantitativeresearch onsteel plate damageunder the influenceof airgaps.It is found that when the air gap width is 0.05， O.10 and 0 . 2 0 m m ，the motion mode of the steel plate changes obviously under the forward detonation.The trendofthecenterpoint movement changes from steprising tooblique wave rising，indicatinga notable elongation ofthe lead time of detonation wave.And the stelplate also has an obvious deformation and breakdown. Driven by slippingdetonation，the motion paterns acrossvarious pointsof thestee plate are largelyuniform，withonly marginal variations inthe leadtimeof detonation wave.No significant deformation orrupture of the stel plateis observed. Itis considered that the wedge-shaped wave formed bytheprecursorshock waveanddetonation waves isthekeytothe breakdown ofthe bottomofstelplate inthecaseofforward detonation.However，themomentumcomponentofthe precursorshock wave and detonation wave acting on the sideof steel plate in the caseofslipping detonation is smallso that no obvious damage ocurs.This articlealsoprovidesalotofquantitative data onthedeformationofsteelplatessubjectedtolongitudinalairgaps， which can provide high-precision experimentaldata for the related numerical simulationsand theoretical analysis work.

Keywords： air gap; detonation; explosives; crack

在武器装药结构或爆炸装置中，受制造工艺、装配及环境因素的影响，用于做功的炸药与壳体之间往往存在气隙。（剩余7127字）