2011 Vol. 31, No. 4
Display Method:
2011, 31(4): 337-342.
doi: 10.11883/1001-1455(2011)04-0337-06
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Abstract:
Gaseousdetonationpropagationof2H2/O2/Armixtureinanannulartubewasexperimentallyandnumericallyinvestigated. Detonationcellularpatternswererecordedbysmokedfoils.The second-orderadditivesemi-implicitRunge-Kutta(ASIRK)methodandthefifth-orderweightedessent...
Gaseousdetonationpropagationof2H2/O2/Armixtureinanannulartubewasexperimentallyandnumericallyinvestigated. Detonationcellularpatternswererecordedbysmokedfoils.The second-orderadditivesemi-implicitRunge-Kutta(ASIRK)methodandthefifth-orderweightedessent...
2011, 31(4): 343-348.
doi: 10.11883/1001-1455(2011)04-0343-06
Abstract:
Thecomparabilityruleonhydrodynamicsimpactwasdescribedandvalidatedwiththedimensionanalysismethod. ThemodifiedSPH methodwasusedtosimulatethethintargetpenetration toevaluatethecomparabilityrule.Itisdemonstratedthatthecomparabilityruleonhypervelocityimpa...
Thecomparabilityruleonhydrodynamicsimpactwasdescribedandvalidatedwiththedimensionanalysismethod. ThemodifiedSPH methodwasusedtosimulatethethintargetpenetration toevaluatethecomparabilityrule.Itisdemonstratedthatthecomparabilityruleonhypervelocityimpa...
2011, 31(4): 349-354.
doi: 10.11883/1001-1455(2011)04-0349-06
Abstract:
Thedifferencesoftheload-bearingstateandtheintensitywereconsideredbetweensteeland concretewhileastructurecollapsing.Acommonnodeseparatemodelwasadoptedtosimulatethe collapseprocessofareinforcedconcretestructurebyusingthefiniteelementanalysissoftwareANS...
Thedifferencesoftheload-bearingstateandtheintensitywereconsideredbetweensteeland concretewhileastructurecollapsing.Acommonnodeseparatemodelwasadoptedtosimulatethe collapseprocessofareinforcedconcretestructurebyusingthefiniteelementanalysissoftwareANS...
Blaststressfieldoflinearexplosivechargeanditsapplication
tomedium-depthholeblastinginundergroundmine
2011, 31(4): 355-360.
doi: 10.11883/1001-1455(2011)04-0355-06
Abstract:
Aimedatthefactthatthetheoreticalguidanceforthesphericalconcentratedchargeblasting haveadiscrepancywiththeactualstatusinthedesignofthemedium-depthholeblasting,twotypes ofexperimentalmodelswereproposed.Modelexperimentswerecarriedoutbyusingholographicla...
Aimedatthefactthatthetheoreticalguidanceforthesphericalconcentratedchargeblasting haveadiscrepancywiththeactualstatusinthedesignofthemedium-depthholeblasting,twotypes ofexperimentalmodelswereproposed.Modelexperimentswerecarriedoutbyusingholographicla...
2011, 31(4): 361-366.
doi: 10.11883/1001-1455(2011)04-0361-06
Abstract:
Aimedatthedifficultyinthetheoreticalanalysisonthemechanicalbehaviorsofaluminum foam-filledcylindricalshellsduetothecomplicatedeformationpatternsofaluminum foamsand shells,theBilkhu/Duboiscrushablefoam modelwasanalyzedandthenusedtodescribethemacroscop...
Aimedatthedifficultyinthetheoreticalanalysisonthemechanicalbehaviorsofaluminum foam-filledcylindricalshellsduetothecomplicatedeformationpatternsofaluminum foamsand shells,theBilkhu/Duboiscrushablefoam modelwasanalyzedandthenusedtodescribethemacroscop...
2011, 31(4): 367-372.
doi: 10.11883/1001-1455(2011)04-0367-06
Abstract:
Aimedatthedifficultiesofunderwaterexplosionloadandinstantaneousfluid-structureinteractioninthenumericalsimulationofdynamicresponseofwarshipstructures, basedontheGeers- Huntermodel,amodifiedmodelforcalculatingtheunderwaterexplosionbubbleloadwaspropose...
Aimedatthedifficultiesofunderwaterexplosionloadandinstantaneousfluid-structureinteractioninthenumericalsimulationofdynamicresponseofwarshipstructures, basedontheGeers- Huntermodel,amodifiedmodelforcalculatingtheunderwaterexplosionbubbleloadwaspropose...
2011, 31(4): 373-379.
doi: 10.11883/1001-1455(2011)04-0373-07
Abstract:
Athree-dimensionalsmoothedparticlehydrodynamics(SPH)codewasdevelopedtosimulatethepenetrationofceramic/ metalcompositearmorsbyprojectiles.TheJohnson-CookandJohnson- HolmquistIIconstitutivemodelsandtheMie-Grneisenequationofstatewereincorporatedinto the...
Athree-dimensionalsmoothedparticlehydrodynamics(SPH)codewasdevelopedtosimulatethepenetrationofceramic/ metalcompositearmorsbyprojectiles.TheJohnson-CookandJohnson- HolmquistIIconstitutivemodelsandtheMie-Grneisenequationofstatewereincorporatedinto the...
2011, 31(4): 380-384.
doi: 10.11883/1001-1455(2011)04-0380-05
Abstract:
Themotiondeformationoftheinnershellsoutsidedisperseexplosivewastheoreticallyanalyzed, whichwasresultedfromthedrivingoftheexplosionproduction.Basedonthetheoreticalanalysis, staticexplosiondamagepowerexperimentswereconductedfortwokindsofsingleeventfuel...
Themotiondeformationoftheinnershellsoutsidedisperseexplosivewastheoreticallyanalyzed, whichwasresultedfromthedrivingoftheexplosionproduction.Basedonthetheoreticalanalysis, staticexplosiondamagepowerexperimentswereconductedfortwokindsofsingleeventfuel...
2011, 31(4): 385-391.
doi: 10.11883/1001-1455(2011)04-0385-07
Abstract:
Unnotchedoxygen-freehighconductive(OFHC)barsweretestedatdifferenttensilevelocitiesonatensionHopkinsonbarandanovelfacilityforhigh- speedtensiletestsbasedonaone-stage gasgunsystem.Andtheimpactvelocitycorrespondingtothefractureattheimpactendwasdetermine...
Unnotchedoxygen-freehighconductive(OFHC)barsweretestedatdifferenttensilevelocitiesonatensionHopkinsonbarandanovelfacilityforhigh- speedtensiletestsbasedonaone-stage gasgunsystem.Andtheimpactvelocitycorrespondingtothefractureattheimpactendwasdetermine...
2011, 31(4): 392-396.
doi: 10.11883/1001-1455(2011)04-0392-05
Abstract:
Dynamiccompressiontestsforpolyurethanefoam wereperformedonanelongatedsplit Hopkinsonpressurebarsetup,theincidentbarofwhichwassixmeterlongandthestrikerwaseight decimeterlong.Apulseshaperwasusedtoachievethedynamicbalanceinthestressesatthetwo sidesofthe...
Dynamiccompressiontestsforpolyurethanefoam wereperformedonanelongatedsplit Hopkinsonpressurebarsetup,theincidentbarofwhichwassixmeterlongandthestrikerwaseight decimeterlong.Apulseshaperwasusedtoachievethedynamicbalanceinthestressesatthetwo sidesofthe...
2011, 31(4): 397-401.
doi: 10.11883/1001-1455(2011)04-0397-05
Abstract:
PressedTNTexplosivewaschosentocarryout2-D Lagrangianexperiments.Therelied two2-Dcompositemanganin-constantan(CMC)LagrangiangaugesatthesameLagrangianposition. Andthetwogaugeswereplacedonandofftheaxis,respectively.Thepressureandradialdisplacementwereme...
PressedTNTexplosivewaschosentocarryout2-D Lagrangianexperiments.Therelied two2-Dcompositemanganin-constantan(CMC)LagrangiangaugesatthesameLagrangianposition. Andthetwogaugeswereplacedonandofftheaxis,respectively.Thepressureandradialdisplacementwereme...
2011, 31(4): 402-406.
doi: 10.11883/1001-1455(2011)04-0402-05
Abstract:
Toexplorethesplittingstrengthofexpandedpolystyrene(EPS)concretewiththedifferent volumeconcentrationsofEPS,Braziliandiscspecimenswerediametrallyimpactedbyusinga74-mmdiametersplitHopkinsonpressurebar( SHPB)atdifferentimpactvelocities.Foreachvolumeconce...
Toexplorethesplittingstrengthofexpandedpolystyrene(EPS)concretewiththedifferent volumeconcentrationsofEPS,Braziliandiscspecimenswerediametrallyimpactedbyusinga74-mmdiametersplitHopkinsonpressurebar( SHPB)atdifferentimpactvelocities.Foreachvolumeconce...
2011, 31(4): 407-412.
doi: 10.11883/1001-1455(2011)04-0407-06
Abstract:
Basedontheone-stepchemicalreactionEulerequations,thehighresolutionhybridRoe/ HLLschemeandtheadaptivemeshrefinement(AMR)methodwereemployedtonumericallyinvestigatetheprocessofdetonationinducedbythecollisionofthediffractedshockwavesinsideasquare tubewit...
Basedontheone-stepchemicalreactionEulerequations,thehighresolutionhybridRoe/ HLLschemeandtheadaptivemeshrefinement(AMR)methodwereemployedtonumericallyinvestigatetheprocessofdetonationinducedbythecollisionofthediffractedshockwavesinsideasquare tubewit...
2011, 31(4): 413-417.
doi: 10.11883/1001-1455(2011)04-0413-05
Abstract:
Inthispaper,weextendatwo-dimensioncode,whichcouplesanEulerianprogram (SCB scheme)withaLagrangiancode(DEFEL:2-Dfiniteelementcode),tothecontextofmulti-interface scenariobydevelopingaGhost-fluidEuler-Lagrange(GEL)couplingmethod.Weusewater-aironedimensio...
Inthispaper,weextendatwo-dimensioncode,whichcouplesanEulerianprogram (SCB scheme)withaLagrangiancode(DEFEL:2-Dfiniteelementcode),tothecontextofmulti-interface scenariobydevelopingaGhost-fluidEuler-Lagrange(GEL)couplingmethod.Weusewater-aironedimensio...
2011, 31(4): 418-422.
doi: 10.11883/1001-1455(2011)04-0418-05
Abstract:
Byapplyingthemovingleastsquaresurfacefittingtechniqueandgeneticalgorithmoptimizationtechnology, acompletestructuraloptimizationdesigntechniqueforcrashworthinesswasproposedandthecorrespondingprogramcodesweredevelopedtoreali ethetypicalaircraftstructur...
Byapplyingthemovingleastsquaresurfacefittingtechniqueandgeneticalgorithmoptimizationtechnology, acompletestructuraloptimizationdesigntechniqueforcrashworthinesswasproposedandthecorrespondingprogramcodesweredevelopedtoreali ethetypicalaircraftstructur...
2011, 31(4): 423-427.
doi: 10.11883/1001-1455(2011)04-0423-05
Abstract:
Anexplicitexpressionforthestrain-rateeffectontheuniaxialtensilestrengthofbrittlematerialsunderdynamicloadingswasderivedbysolvingthewaveequationtogetherwiththes -calledfinitestructural- timefailurecriterion.Itisshownthatthereisanobviousstructuralrespo...
Anexplicitexpressionforthestrain-rateeffectontheuniaxialtensilestrengthofbrittlematerialsunderdynamicloadingswasderivedbysolvingthewaveequationtogetherwiththes -calledfinitestructural- timefailurecriterion.Itisshownthatthereisanobviousstructuralrespo...
2011, 31(4): 428-432.
doi: 10.11883/1001-1455(2011)04-0428-05
Abstract:
Underwaterexplosionpressuretestandgasbubblepulsationexperimentwereconductedto obtainthetransmissionandattenuationpropertiesaswellasthegasbubblepulsationpropertiesfor theunderwaterexplosionshockwavesofthemetal-claddetonatingcords.Andsomeunderwaterexpl...
Underwaterexplosionpressuretestandgasbubblepulsationexperimentwereconductedto obtainthetransmissionandattenuationpropertiesaswellasthegasbubblepulsationpropertiesfor theunderwaterexplosionshockwavesofthemetal-claddetonatingcords.Andsomeunderwaterexpl...
2011, 31(4): 433-438.
doi: 10.11883/1001-1455(2011)04-0433-06
Abstract:
Aimedatsynthesizingtheencapsulationofnickelnanocrystalwithingraphiticcarbon,effectiveexperimentswerecarriedoutbyadjustingthemoleratioofcarbonsourceandmetalsourcein theseprecursors.Thechemicalcomposition,nanostructuresandmagneticpropertiesofthecomposi...
Aimedatsynthesizingtheencapsulationofnickelnanocrystalwithingraphiticcarbon,effectiveexperimentswerecarriedoutbyadjustingthemoleratioofcarbonsourceandmetalsourcein theseprecursors.Thechemicalcomposition,nanostructuresandmagneticpropertiesofthecomposi...
2011, 31(4): 439-443.
doi: 10.11883/1001-1455(2011)04-0439-05
Abstract:
Aimedatthefactthatitisnecessarytodeterminethequantitativerelationbetweenthelocal normaldetonationwavespeedDnandthetotalcurvaturewhendetonationshockdynamics(DSD)is usedtostudynonidealdetonation,steady-statedetonationvelocitiesandwaveshapesweremeasured...
Aimedatthefactthatitisnecessarytodeterminethequantitativerelationbetweenthelocal normaldetonationwavespeedDnandthetotalcurvaturewhendetonationshockdynamics(DSD)is usedtostudynonidealdetonation,steady-statedetonationvelocitiesandwaveshapesweremeasured...
2011, 31(4): 444-448.
doi: 10.11883/1001-1455(2011)04-0444-05
Abstract:
Thispaperrevealsthephenomenonoftheaccumulatingenergyeffectofhighvelocityairflowwhichisemergedbyshootingpracticefromaverticalfl ingplateintwinklingofattack.Ingeneralexperimentsofexplosivecompression, theairspaceundertheflyingplateisatmosphericalair,it...
Thispaperrevealsthephenomenonoftheaccumulatingenergyeffectofhighvelocityairflowwhichisemergedbyshootingpracticefromaverticalfl ingplateintwinklingofattack.Ingeneralexperimentsofexplosivecompression, theairspaceundertheflyingplateisatmosphericalair,it...
