2013 Vol. 33, No. 2
column
Display Method:
2013, 33(2): 113-119.
doi: 10.11883/1001-1455(2013)02-0113-07
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Abstract:
Toexploretheeffectsoftheinitialdefectsonthefragmentationprocessesofmaterialsat highstrainrates,anexplicitFEMcodewasusedtosimulatethedynamicfragmentationprocessesof thinelastic-plasticbarsundergoinguniformhighstrain-ratetensiledeformations.Thethinbarw...
Toexploretheeffectsoftheinitialdefectsonthefragmentationprocessesofmaterialsat highstrainrates,anexplicitFEMcodewasusedtosimulatethedynamicfragmentationprocessesof thinelastic-plasticbarsundergoinguniformhighstrain-ratetensiledeformations.Thethinbarw...
2013, 33(2): 120-125.
doi: 10.11883/1001-1455(2013)02-0120-06
Abstract:
Basedonthehydrodynamic-elastoplasticmodel,theequationswereestablishedtocharacterizetheimpactpropertiesoftheAlfoamsunderexplosiveloading, whichweretransformedintodiscreteLagrangedifferenceformsinuniformgrid. TheshockresponsesoftheAlfoamsinwaterandair ...
Basedonthehydrodynamic-elastoplasticmodel,theequationswereestablishedtocharacterizetheimpactpropertiesoftheAlfoamsunderexplosiveloading, whichweretransformedintodiscreteLagrangedifferenceformsinuniformgrid. TheshockresponsesoftheAlfoamsinwaterandair ...
2013, 33(2): 126-132.
doi: 10.11883/1001-1455(2013)02-0126-07
Abstract:
Twokindsoftypicalsoftrockmaterials,mudstoneandsandymudstone,werechosenasthe researchedobjectives.Andtheiruniaxialdynamiccompressivepropertiesweretestedbyusingasplit Hopkinsonpressurebarsystem.Theobtainedstress-straincurvestakeoncomplexdynamiccharacte...
Twokindsoftypicalsoftrockmaterials,mudstoneandsandymudstone,werechosenasthe researchedobjectives.Andtheiruniaxialdynamiccompressivepropertiesweretestedbyusingasplit Hopkinsonpressurebarsystem.Theobtainedstress-straincurvestakeoncomplexdynamiccharacte...
2013, 33(2): 133-139.
doi: 10.11883/1001-1455(2013)02-0133-07
Abstract:
Thediscontinuoussmoothedparticlehydrodynamics(DSPH)methodwasdiscussedabout itssensitivitytotheparticleuniformityneartheboundary.Andthereasonsforthehighcalculation precisionbytheDSPH methodwereanalyzedbydeducingitsformulasfromtheexistentdiscontinuous ...
Thediscontinuoussmoothedparticlehydrodynamics(DSPH)methodwasdiscussedabout itssensitivitytotheparticleuniformityneartheboundary.Andthereasonsforthehighcalculation precisionbytheDSPH methodwereanalyzedbydeducingitsformulasfromtheexistentdiscontinuous ...
2013, 33(2): 140-147.
doi: 10.11883/1001-1455(2013)02-0140-08
Abstract:
Aimedtothepoormatchofthetraditionalwaveletpackettransform withthemeasured blastingvibrationsignalinthechoiceofwaveletbase,amethodwasproposedfortheconstructionof secondgenerationwaveletsbasedoninterpolationsubdivision.Andthefrequencyaliasresultedbydot...
Aimedtothepoormatchofthetraditionalwaveletpackettransform withthemeasured blastingvibrationsignalinthechoiceofwaveletbase,amethodwasproposedfortheconstructionof secondgenerationwaveletsbasedoninterpolationsubdivision.Andthefrequencyaliasresultedbydot...
2013, 33(2): 148-155.
doi: 10.11883/1001-1455(2013)02-0148-08
Abstract:
Basedonthecoldenergymixturetheory,theequationsofstateweregivenforthecompactionmultifunctionalenergeticstructuralmaterials( MESMs)undershockcompressionbyusingthe Hugoniotrelationsofthecomponents.AndcombiningtheabovemethodandtheWu-Jingmodel,the equatio...
Basedonthecoldenergymixturetheory,theequationsofstateweregivenforthecompactionmultifunctionalenergeticstructuralmaterials( MESMs)undershockcompressionbyusingthe Hugoniotrelationsofthecomponents.AndcombiningtheabovemethodandtheWu-Jingmodel,the equatio...
2013, 33(2): 156-162.
doi: 10.11883/1001-1455(2013)02-0156-07
Abstract:
Two-dimensional(2D)plain-wovenC/SiCcompositeplatesandduralumin (LY12)plates wereimpactedbymylar-filmflyerplateswhichwereloadedbyanelectricalgunto3.4-9.5m/s,respectively. Thefreeinterfacialvelocitiesoftheexperimentalplates were measured withalaser Dop...
Two-dimensional(2D)plain-wovenC/SiCcompositeplatesandduralumin (LY12)plates wereimpactedbymylar-filmflyerplateswhichwereloadedbyanelectricalgunto3.4-9.5m/s,respectively. Thefreeinterfacialvelocitiesoftheexperimentalplates were measured withalaser Dop...
2013, 33(2): 163-168.
doi: 10.11883/1001-1455(2013)02-0163-06
Abstract:
Basedonthetwo-dimensionalringsystem,acomputationalmodelwasdevelopedfordensity- gradedcircularhoneycomb materialsbychangingthewallthicknessesoftherings.Andfurther discussionwascarriedoutfortheinfluencesofthedensitygradientvariationontheenergy-absorpti...
Basedonthetwo-dimensionalringsystem,acomputationalmodelwasdevelopedfordensity- gradedcircularhoneycomb materialsbychangingthewallthicknessesoftherings.Andfurther discussionwascarriedoutfortheinfluencesofthedensitygradientvariationontheenergy-absorpti...
2013, 33(2): 169-174.
doi: 10.11883/1001-1455(2013)02-0169-06
Abstract:
Penetrationexperimentswereconductedbylaunchinghemispherical-nosesolidsteelprojectilesintothinconcretetargets. Basedontheaboveexperiments,someproblemscorrelatedwiththe theoreticalmodelandnumericalmodelwerediscussed.Inthepenetrationexperiments,thestrai...
Penetrationexperimentswereconductedbylaunchinghemispherical-nosesolidsteelprojectilesintothinconcretetargets. Basedontheaboveexperiments,someproblemscorrelatedwiththe theoreticalmodelandnumericalmodelwerediscussed.Inthepenetrationexperiments,thestrai...
2013, 33(2): 175-180.
doi: 10.11883/1001-1455(2013)02-0175-06
Abstract:
Toinvestigatetheshockwavepropagationandthebubblemotionofunderwaterexplosion fromabottomcharge,principleexperimentsofunderwaterexplosionwereconductedinawatertank. High-speedcameraswereusedtocapturethegasbubbleformationandcollapse,andpressuretransducer...
Toinvestigatetheshockwavepropagationandthebubblemotionofunderwaterexplosion fromabottomcharge,principleexperimentsofunderwaterexplosionwereconductedinawatertank. High-speedcameraswereusedtocapturethegasbubbleformationandcollapse,andpressuretransducer...
2013, 33(2): 181-185.
doi: 10.11883/1001-1455(2013)02-0181-05
Abstract:
Abstract:Basedontheminimum mean-squareerrorapproach,acomputationalmethodwasproposed forlocatingthepositionsofunderwaterexplosionsources.Theverificationexperimentsshowthatthe proposedlocationmethodcanmeetwiththetestrequirementswhenthequantityoftheeffe...
Abstract:Basedontheminimum mean-squareerrorapproach,acomputationalmethodwasproposed forlocatingthepositionsofunderwaterexplosionsources.Theverificationexperimentsshowthatthe proposedlocationmethodcanmeetwiththetestrequirementswhenthequantityoftheeffe...
2013, 33(2): 186-193.
doi: 10.11883/1001-1455(2013)02-0186-08
Abstract:
Basedonthe60-mm-diameterexplosively-formedprojectile(EFP)warheadwithanarc-cone liner,amultipleexplosively-formedprojectile(MEFP)warheadwasdesignedbyfixinganejectable cross-shapedreseauinaproperplaceinfrontofthelinerasthecuttingdevice.Andthearmor-pier...
Basedonthe60-mm-diameterexplosively-formedprojectile(EFP)warheadwithanarc-cone liner,amultipleexplosively-formedprojectile(MEFP)warheadwasdesignedbyfixinganejectable cross-shapedreseauinaproperplaceinfrontofthelinerasthecuttingdevice.Andthearmor-pier...
2013, 33(2): 194-199.
doi: 10.11883/1001-1455(2013)02-0194-06
Abstract:
Byadoptingthestoragetesttechniquesunderbadenvironments,ashockwaverecordersystem wasdesignedwithMCUandCPLDasthemaincontrolchips.Therecordersystemhasinsideand outsidetriggerfunctions,inwhichtheopticalfibersareusedtotransmitthetriggeredsignals.And thehi...
Byadoptingthestoragetesttechniquesunderbadenvironments,ashockwaverecordersystem wasdesignedwithMCUandCPLDasthemaincontrolchips.Therecordersystemhasinsideand outsidetriggerfunctions,inwhichtheopticalfibersareusedtotransmitthetriggeredsignals.And thehi...
2013, 33(2): 200-206.
doi: 10.11883/1001-1455(2013)02-0200-07
Abstract:
Aimedtothesecurityestimationofcylindricalexplosionvessels,theradialdistortionatthe centersectionofthevesselwasnumericallycalculated.Whentheinitialparametersaresetwithrandomerrors, thefinalsimulationresultschangeobviously.Someessentialparametersaresam...
Aimedtothesecurityestimationofcylindricalexplosionvessels,theradialdistortionatthe centersectionofthevesselwasnumericallycalculated.Whentheinitialparametersaresetwithrandomerrors, thefinalsimulationresultschangeobviously.Someessentialparametersaresam...
2013, 33(2): 207-211.
doi: 10.11883/1001-1455(2013)02-0207-05
Abstract:
Theappearanceofinsensitiveammunitionhascreatednewrequirementsfortheboosterpelletsofthedetonationtrain. Traditionalcylindricalboosterpelletshavemuchdifficultyinmeetinginsensitiveammunitionsdemandofreliabledetonation. Thedesigntheoryofhigh-effect-boost...
Theappearanceofinsensitiveammunitionhascreatednewrequirementsfortheboosterpelletsofthedetonationtrain. Traditionalcylindricalboosterpelletshavemuchdifficultyinmeetinginsensitiveammunitionsdemandofreliabledetonation. Thedesigntheoryofhigh-effect-boost...
2013, 33(2): 212-216.
doi: 10.11883/1001-1455(2013)02-0212-05
Abstract:
Tostudythedischargecharacteristicsofferroelectricceramicsashighpowerpulsesupplyof miniatureelectromagneticpulsebombs,thenumericalalgorithmoftheshockwaveontheferroelectricceramicsimpactedbyanexplosive- drivenflyerwasbroughtforward.Theimpactloadsofdiff...
Tostudythedischargecharacteristicsofferroelectricceramicsashighpowerpulsesupplyof miniatureelectromagneticpulsebombs,thenumericalalgorithmoftheshockwaveontheferroelectricceramicsimpactedbyanexplosive- drivenflyerwasbroughtforward.Theimpactloadsofdiff...
2013, 33(2): 217-221.
doi: 10.11883/1001-1455(2013)02-0217-04
Abstract:
Atwo-dimensionalLagrangianelastic-plastichydrodynamicfiniteelementcodenamedLTZ- 2Dwasusedtonumericallyexploretheinfluencesoftheaggregatestructuresonthepenetration processesoftheconcretetargetsimpactedbytheprojectilesaswellasthecorrespondingtargetdama...
Atwo-dimensionalLagrangianelastic-plastichydrodynamicfiniteelementcodenamedLTZ- 2Dwasusedtonumericallyexploretheinfluencesoftheaggregatestructuresonthepenetration processesoftheconcretetargetsimpactedbytheprojectilesaswellasthecorrespondingtargetdama...
2013, 33(2): 221-224.
doi: 10.11883/1001-1455(2013)02-0221-04
Abstract:
SevenkindsofRDX-basedhighexplosivesampleswithdifferentdensitieswerepreparedto studytheinfluencesofexplosivechargedensitiesoncook-offresponse.Theslowcook-offexperiments wereconductedbyusingthecook-offbombswiththelength-diameterratioofabout1.2attherate...
SevenkindsofRDX-basedhighexplosivesampleswithdifferentdensitieswerepreparedto studytheinfluencesofexplosivechargedensitiesoncook-offresponse.Theslowcook-offexperiments wereconductedbyusingthecook-offbombswiththelength-diameterratioofabout1.2attherate...
