2012 Vol. 32, No. 5
Display Method:
2012, 32(5): 449-456.
doi: 10.11883/1001-1455(2012)05-0449-08
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Abstract:
Withfluid-solidcouplingalgorithmbasedonthepenaltyfunctionofnon-lineardynamicfiniteelementprogram ANSYS/LS-DYNA,thedynamicresponseprocessofthethick-walledcylinder subjectedtointernalcylindricalchargeexplosionwasnumericallysimulated.Theevolutionoftheun...
Withfluid-solidcouplingalgorithmbasedonthepenaltyfunctionofnon-lineardynamicfiniteelementprogram ANSYS/LS-DYNA,thedynamicresponseprocessofthethick-walledcylinder subjectedtointernalcylindricalchargeexplosionwasnumericallysimulated.Theevolutionoftheun...
2012, 32(5): 457-462.
doi: 10.11883/1001-1455(2012)05-0457-06
Abstract:
Polypropylene(PP)plasticwasreprocessedbylaserfacilitytodecreasethelocalstrengtharoundthescoredline. Theweakenstrengthisnecessarytoevaluatetomeetengineeringrequirement. Inthepresentresearch,thecommercialfiniteelementsoftwareLS-DYNA wasappliedtoanalyze...
Polypropylene(PP)plasticwasreprocessedbylaserfacilitytodecreasethelocalstrengtharoundthescoredline. Theweakenstrengthisnecessarytoevaluatetomeetengineeringrequirement. Inthepresentresearch,thecommercialfiniteelementsoftwareLS-DYNA wasappliedtoanalyze...
2012, 32(5): 463-469.
doi: 10.11883/1001-1455(2012)05-0463-07
Abstract:
BasedonthecomplexvariablefunctionmethodandtheGreensfunctionmethod,thescatteringofSH- wavebyabi-materialinterfacecrackandacircularliningnearabi-materialinterfacein half-spacewasexploredandthecorrespondingdynamicstressconcentrationatthecircularliningin...
BasedonthecomplexvariablefunctionmethodandtheGreensfunctionmethod,thescatteringofSH- wavebyabi-materialinterfacecrackandacircularliningnearabi-materialinterfacein half-spacewasexploredandthecorrespondingdynamicstressconcentrationatthecircularliningin...
2012, 32(5): 470-474.
doi: 10.11883/1001-1455(2012)05-0470-05
Abstract:
ByusingthenumericalsimulationsoftwareLS-DYNA,shockdamageprocessesofLY12aluminumalloyplateissimulatedforthefailurecriterionresearch. Theinfluencingfactorssuchasthe peakoverpressure,positivephaseduration,yieldstrengthofmaterial,andnaturalvibrationfrequ...
ByusingthenumericalsimulationsoftwareLS-DYNA,shockdamageprocessesofLY12aluminumalloyplateissimulatedforthefailurecriterionresearch. Theinfluencingfactorssuchasthe peakoverpressure,positivephaseduration,yieldstrengthofmaterial,andnaturalvibrationfrequ...
2012, 32(5): 475-482.
doi: 10.11883/1001-1455(2012)05-0475-08
Abstract:
BasedonexplicitdynamicfiniteelementsimulationbyANSYS/LS-DYNA,thein-planedynamiccrushingofhoneycombswithnegativePoissonsratioeffectswasnumericallyinvestigated. Undertheassumptionthattheedgelengthandthicknesswerethesame,thehexagonalhoneycomb modelsfill...
BasedonexplicitdynamicfiniteelementsimulationbyANSYS/LS-DYNA,thein-planedynamiccrushingofhoneycombswithnegativePoissonsratioeffectswasnumericallyinvestigated. Undertheassumptionthattheedgelengthandthicknesswerethesame,thehexagonalhoneycomb modelsfill...
2012, 32(5): 483-489.
doi: 10.11883/1001-1455(2012)05-0483-07
Abstract:
Thebackgroundofdevelopingthree-stagegasguntechniquedrivenbycompressed-nitrogen forlaunching8km/sprojectileswaspresented.Theeffectsofsubstitutingatwo-stagecompressedgasgun withathree-stagecompressed-gasgunonelevatingprojectilesvelocity werebrieflydesc...
Thebackgroundofdevelopingthree-stagegasguntechniquedrivenbycompressed-nitrogen forlaunching8km/sprojectileswaspresented.Theeffectsofsubstitutingatwo-stagecompressedgasgun withathree-stagecompressed-gasgunonelevatingprojectilesvelocity werebrieflydesc...
2012, 32(5): 490-494.
doi: 10.11883/1001-1455(2012)05-0490-05
Abstract:
Byusingthephotoelectric method,thesteady-statedetonationvelocitiesandthecorrespondingwaveshapesweremeasuredfortheJBO- 9021ratestickswiththediametersof10,15and 30mm,respectively,andintheJBO-9021ratesticksthemassfractionsofTATB,HMXandF2314 were80%,15%a...
Byusingthephotoelectric method,thesteady-statedetonationvelocitiesandthecorrespondingwaveshapesweremeasuredfortheJBO- 9021ratestickswiththediametersof10,15and 30mm,respectively,andintheJBO-9021ratesticksthemassfractionsofTATB,HMXandF2314 were80%,15%a...
2012, 32(5): 495-500.
doi: 10.11883/1001-1455(2012)05-0495-06
Abstract:
Itisnecessarytodeterminethequantitativerelationbetweenthelocalnormaldetonation wavespeedDnandthetotalcurvaturewhendetonationshockdynamics(DSD)isusedtostudynonidealdetonation. WeextendedourworkontheDn()relationofHMX/TNTratesticksfromthe RDX/TNTratesti...
Itisnecessarytodeterminethequantitativerelationbetweenthelocalnormaldetonation wavespeedDnandthetotalcurvaturewhendetonationshockdynamics(DSD)isusedtostudynonidealdetonation. WeextendedourworkontheDn()relationofHMX/TNTratesticksfromthe RDX/TNTratesti...
2012, 32(5): 501-507.
doi: 10.11883/1001-1455(2012)05-0501-07
Abstract:
StrainrateeffectofconcretedamwastakenintoconsiderationintheestablishmentofgravitydamfullycoupledmodelbyusingsoftwareLS- DYNA.Numericalsimulationmethodwasusedto studythedynamicresponseofthedamsubjectedtostrongunderwaterexplosionshockloading.The possib...
StrainrateeffectofconcretedamwastakenintoconsiderationintheestablishmentofgravitydamfullycoupledmodelbyusingsoftwareLS- DYNA.Numericalsimulationmethodwasusedto studythedynamicresponseofthedamsubjectedtostrongunderwaterexplosionshockloading.The possib...
2012, 32(5): 508-514.
doi: 10.11883/1001-1455(2012)05-0508-07
Abstract:
Basedonthethree-dimensionalSPH method,thevariablesmoothinglengthmodificationis appliedtothetraditionallinked-listsearchalgorithm,andthestableapproachofdealingwithmultiphasematerialinterfaceisputforward. Throughsimulatingunderwaterexplosionoffreefield...
Basedonthethree-dimensionalSPH method,thevariablesmoothinglengthmodificationis appliedtothetraditionallinked-listsearchalgorithm,andthestableapproachofdealingwithmultiphasematerialinterfaceisputforward. Throughsimulatingunderwaterexplosionoffreefield...
2012, 32(5): 515-522.
doi: 10.11883/1001-1455(2012)05-0515-08
Abstract:
Inordertoenhancethestructuralstabilityofearthpenetrationwarhead (EPW)inhighspeedpenetration, theadvancedEPW wasdesigned.Theperformanceofthereduced-scaleadvanced EPW wasexperimentallystudiedduringthestrikingvelocitybetween1130~1650m/s.Theresidual proj...
Inordertoenhancethestructuralstabilityofearthpenetrationwarhead (EPW)inhighspeedpenetration, theadvancedEPW wasdesigned.Theperformanceofthereduced-scaleadvanced EPW wasexperimentallystudiedduringthestrikingvelocitybetween1130~1650m/s.Theresidual proj...
2012, 32(5): 523-527.
doi: 10.11883/1001-1455(2012)05-0523-05
Abstract:
ThecharacteristicofdetonationreactionoftheemulsionexplosivescontainingFe,Mnand Znelementswasdiscussed.Thethermaldecompositioncharacteristicoftheexplosivesanddetonation products,theingredientsandmorphologyofdetonationproductswereallresearchedandcharac...
ThecharacteristicofdetonationreactionoftheemulsionexplosivescontainingFe,Mnand Znelementswasdiscussed.Thethermaldecompositioncharacteristicoftheexplosivesanddetonation products,theingredientsandmorphologyofdetonationproductswereallresearchedandcharac...
2012, 32(5): 528-534.
doi: 10.11883/1001-1455(2012)05-0528-07
Abstract:
The45steelcylindershellswereloadedbytheimprovedSHPBtoundergoexpandingfracture. Theexperimentalcylindershellssubjectedtodifferentdegreesofexpandingdeformationranging fromzerotofracturestrainwererecoveredwithoutsecondloading.Andtheradialstrain,strainra...
The45steelcylindershellswereloadedbytheimprovedSHPBtoundergoexpandingfracture. Theexperimentalcylindershellssubjectedtodifferentdegreesofexpandingdeformationranging fromzerotofracturestrainwererecoveredwithoutsecondloading.Andtheradialstrain,strainra...
2012, 32(5): 535-541.
doi: 10.11883/1001-1455(2012)05-0535-07
Abstract:
Theshort-timeFouriertransformcannotmeetthedifferentrequirementsofthehighand lowfrequencychangesofsignalandthewavelettransformcanbelimitedbythewaveletbaseweselect. Therefore,weuse HHTtoanalysetheblastingvibrationsignalthroughthetime-frequency powerspe...
Theshort-timeFouriertransformcannotmeetthedifferentrequirementsofthehighand lowfrequencychangesofsignalandthewavelettransformcanbelimitedbythewaveletbaseweselect. Therefore,weuse HHTtoanalysetheblastingvibrationsignalthroughthetime-frequency powerspe...
2012, 32(5): 542-546.
doi: 10.11883/1001-1455(2012)05-0542-05
Abstract:
Newequipmentwhichcoulddriveaplanarflyerviathenetworkdetonationtechniqueto generatelowimpactstressandlowimpactvelocitywasdesigned.Thevelocityandplanarityofthe flyerandtheotherequipmentparameterswereanalyzedbyusingexperimentalmeasurementandnumericalsim...
Newequipmentwhichcoulddriveaplanarflyerviathenetworkdetonationtechniqueto generatelowimpactstressandlowimpactvelocitywasdesigned.Thevelocityandplanarityofthe flyerandtheotherequipmentparameterswereanalyzedbyusingexperimentalmeasurementandnumericalsim...
2012, 32(5): 547-550.
doi: 10.11883/1001-1455(2012)05-0547-04
Abstract:
Technologyofmagneticallydrivenflyertohighvelocityhasbeendevelopedquicklyinrecent years,especiallyatSandialaboratory.Thedesignoftheflyersizeispresentedtheoreticallyandnumerically. Theminimum widthoftheflyerisgivenbyanequationconsideringtheinfluenceofr...
Technologyofmagneticallydrivenflyertohighvelocityhasbeendevelopedquicklyinrecent years,especiallyatSandialaboratory.Thedesignoftheflyersizeispresentedtheoreticallyandnumerically. Theminimum widthoftheflyerisgivenbyanequationconsideringtheinfluenceofr...
2012, 32(5): 551-556.
doi: 10.11883/1001-1455(2012)05-0551-06
Abstract:
Afullycouplednumericalanalysistechnologyisusedtosimulatetheresponseofalargescaleboxculvertunderblastload, inwhichSPH methodisadoptedtomodelthenearfieldmedium, whileFEMisusedtomodelthefarfieldsoilandreinforcedconcreteboxculvert.Theresultsshow thatthed...
Afullycouplednumericalanalysistechnologyisusedtosimulatetheresponseofalargescaleboxculvertunderblastload, inwhichSPH methodisadoptedtomodelthenearfieldmedium, whileFEMisusedtomodelthefarfieldsoilandreinforcedconcreteboxculvert.Theresultsshow thatthed...
2012, 32(5): 557-560.
doi: 10.11883/1001-1455(2012)05-0557-04
Abstract:
Accordingtothestresswavetheory,thebufferandshockabsorptionstructureofadatarecorderwasdesignedbyconsideringthereasonableallocationofthegeneralizedimpedancerat o.The compositestructureforshockabsorptionwasdesignedtosolvetheproblemofnarrowspaceimpact pr...
Accordingtothestresswavetheory,thebufferandshockabsorptionstructureofadatarecorderwasdesignedbyconsideringthereasonableallocationofthegeneralizedimpedancerat o.The compositestructureforshockabsorptionwasdesignedtosolvetheproblemofnarrowspaceimpact pr...
