Internalblastflowfieldanddynamicresponsesofthick-walledcylinder

subjectedtocylindricalchargeexplosion

YAO Zhe-fang; REN Hui-qi; SHEN Zhao-wu

doi:10.11883/1001-1455(2012)05-0449-08

Volume 32 Issue 5

Apr. 2014

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YAO Zhe-fang, REN Hui-qi, SHEN Zhao-wu. Internalblastflowfieldanddynamicresponsesofthick-walledcylindersubjectedtocylindricalchargeexplosion[J]. Explosion And Shock Waves, 2012, 32(5): 449-456. doi: 10.11883/1001-1455(2012)05-0449-08

Citation:

YAO Zhe-fang, REN Hui-qi, SHEN Zhao-wu. Internalblastflowfieldanddynamicresponsesofthick-walledcylinder subjectedtocylindricalchargeexplosion[J]. Explosion And Shock Waves, 2012, 32(5): 449-456. doi: 10.11883/1001-1455(2012)05-0449-08

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Internalblastflowfieldanddynamicresponsesofthick-walledcylinder subjectedtocylindricalchargeexplosion

doi: 10.11883/1001-1455(2012)05-0449-08

1.
Departmentof ModernMechanic,UniversityofScienceandTechnologyofChina,
2.
Hefei230027,Anhui,China;
3.
SchoolofCivilEngineeringandArchitecture,SouthwestUniversityofScienceandTechnology,

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Corresponding author: YAO Zhe-fang
Publish Date: 2012-09-25

Abstract

Abstract

Withfluid-solidcouplingalgorithmbasedonthepenaltyfunctionofnon-lineardynamicfiniteelementprogram ANSYS/LS-DYNA,thedynamicresponseprocessofthethick-walledcylinder subjectedtointernalcylindricalchargeexplosionwasnumericallysimulated.Theevolutionoftheunsteadyblastflowfieldinthecylinderandthedynamicresponseofthecylinderwereanalyzed. Pressurecontourofblastflowfield, thedistributionofblastpressureandimpulseoninnerwallofthecylinder, von-Misesstresscontour,thedistributionofvon-Misesstressweregiven.Simulationresults ofblastpressureandhoopstrainwereingoodagreementwithexperimentalresults,andcalculation resultsofdynamicresponsewerecomparedwiththetheoreticalsolution.Itwasprovedthatthetheoreticalsolutionbasedonplane- strainassumptionmaygiveaconservativeestimateforthisproblem. Theresultsshowthatthethick-walledcylindersubjectedtointernalcylindricalchargeexplosionwas inelasticstate,andthedesignoftheblastchamberissafeincarryingcapacity.Theanalysesarehelpfultosimilardesignandsafeuseofblastchambers.
- mechanicsofexplosion,
- dynamicresponse,
- non-lineardynamicfiniteelement,
- thickwalledcylinder,
- cylindricalcharge,
- blastflowfield