Dynamicresponsesofliquid-filledthin-wall

hemisphericalshellsunderimpact

LUGuo-yun; QINBin; ZHANGGuo-quan; HANZhi-jun; LEIJian-ping

doi:10.11883/1001-1455(2012)06-0561-07

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LUGuo-yun, QINBin, ZHANGGuo-quan, HANZhi-jun, LEIJian-ping. Dynamicresponsesofliquid-filledthin-wallhemisphericalshellsunderimpact[J]. Explosion And Shock Waves, 2012, 32(6): 561-567. doi: 10.11883/1001-1455(2012)06-0561-07

Citation:

LUGuo-yun, QINBin, ZHANGGuo-quan, HANZhi-jun, LEIJian-ping. Dynamicresponsesofliquid-filledthin-wall hemisphericalshellsunderimpact[J]. Explosion And Shock Waves, 2012, 32(6): 561-567. doi: 10.11883/1001-1455(2012)06-0561-07

Citation:

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Dynamicresponsesofliquid-filledthin-wall hemisphericalshellsunderimpact

doi: 10.11883/1001-1455(2012)06-0561-07

1.
InstituteofApplied Mechanics,TaiyuanUniversityofTechnology,
2.
Taiyuan030024,Shanxi,China;
3.
AVICXi’anAircraftIndustry (Group)CompanyLtd.,
4.
Xi’an710089,Shaanxi,China

Funds:

NationalNaturalScienceFoundationofChina(11072167)

Publish Date: 2012-11-25

Abstract

Abstract

Experimentswerecarriedouttostudythedynamicresponseoftheliquid-filledthin-wall hemisphericalshellunderimpactusingtheDHR9401drophammerastheloadingdevice.According totheconfigurationsofthehemisphericalshells,theexperimentaldevicewaselaboratelydesignedto achievetheidealsealforfillingliquid.Thetimehistoriesoftheimpactforceandtheinternalpressure wererecordedfordifferenthemisphericalshells.Fourdistinctdeformationmodesofthehemispherical shellsunderimpactwereobservedasfollows:(1)flatteningoftheupwardlyprotrudingpoints,(2) inwarddimplingwithplastichingesfollowedbyoutwardexpanding,(3)flatteningoftheplasticedge regions,and(4)elasticrecovering.Theexperimentalresultsshowthatdouble-wallliquid-filledhemisphericalshellshavebetterimpactresistancethanthesingle- wallhemisphericalshells,fortheliquid filledcanreducethedeformationoftheinternalshellbyturningpointimpactintoevensurfaceimpact undertheexperimentalimpactconditions.Sothedoubleor multi-layerliquid-filledhemispherical shellscanprovidesatisfyingprotectionunderacertainimpactloading.
- solidmechanics,
- dynamicresponse,
- impact,
- hemi-sphericalshell,
- liquid-filled