Experimentalstudyonlow-velocityimpactignition

forHMXgranularexplosives

WU Yan-qing; HUANG Feng-lei; AI De-you

doi:10.11883/1001-1455(2011)06-0592-08

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WU Yan-qing, HUANG Feng-lei, AI De-you. Experimentalstudyonlow-velocityimpactignitionforHMXgranularexplosives[J]. Explosion And Shock Waves, 2011, 31(6): 592-599. doi: 10.11883/1001-1455(2011)06-0592-08

Citation:

WU Yan-qing, HUANG Feng-lei, AI De-you. Experimentalstudyonlow-velocityimpactignition forHMXgranularexplosives[J]. Explosion And Shock Waves, 2011, 31(6): 592-599. doi: 10.11883/1001-1455(2011)06-0592-08

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Experimentalstudyonlow-velocityimpactignition forHMXgranularexplosives

doi: 10.11883/1001-1455(2011)06-0592-08

1.
StateKeyLaboratoryofExplosionScienceandTechnology,

Funds:

NationalNaturalScienceFoundationofChina(10832003,10902016)

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Corresponding author: WU Yan-qing
Publish Date: 2011-11-25

Abstract

Abstract

Opticalmeasurementcomponentsweredesignedandmachinedtobeequippedintheconventionaldrop- weightsystem.Basedontheimproveddrop-weightsystem,theresponseprocessesofdifferent- massHMXparticlesimpactedbythedifferentfalling-heightweightdropswererecordedbya high-speedcameraonthemicrosecondtimescale.Theprocessesconsistedofthefollowingphenomena: explosiveparticledeformation,melting,ignition,combustionandexplosion.Andaseriesofanalysiswerecarriedoutfortheinfluencesofdrop- weightfallingheightandexplosiveincompactness degreeonexplosiveparticledeformation,ignitiondurationandcombustionintensity.Investigatedresultsshowthatthehigherthefallingheightofthedropweight, thelongerthedurationoftheplastic deformation,theignitionoftheexplosiveinsteadoftheinjectionisapttooccur;thatthelowerfalling heightofthedropweighttendstoinducetheexplosivetointensivelyjetratherthanbeignited;that thehighertheincompactnessdegreeoftheexplosive,theshorterthedurationoftheplasticdeformation, multiplehotspotsareeasiertoformandcoalescewhichleadstohighcombustionprobability.
- mechanicsofexplosion,
- ignition,
- drop-weightimpact,
- granularexplosive,
- high-speed photographicobservation