XIE Zhong-you, YU Ji-lin, ZHENG Zhi-jun. Bendingbehaviorofthin-walledcylindricaltubesfilledwithmetallicfoamunderlow-velocityimpac[J]. Explosion And Shock Waves, 2012, 32(2): 169-173. doi: 10.11883/1001-1455(2012)02-0169-05
Citation: XIE Zhong-you, YU Ji-lin, ZHENG Zhi-jun. Bendingbehaviorofthin-walledcylindricaltubesfilledwithmetallicfoam underlow-velocityimpac[J]. Explosion And Shock Waves, 2012, 32(2): 169-173. doi: 10.11883/1001-1455(2012)02-0169-05

Bendingbehaviorofthin-walledcylindricaltubesfilledwithmetallicfoam underlow-velocityimpac

doi: 10.11883/1001-1455(2012)02-0169-05
Funds:

NationalNaturalScienceFoundationofChina(90205003,10532020,10672156)

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  • Corresponding author: XIE Zhong-you
  • Publish Date: 2012-03-25
  • Three-pointdynamicbendingtestsandquasi-statictestswerecarriedout,respectively.And theexperimentalmethodsandthecorrespondingexperimentalprinciplewereintroducedindetails.In theexperiments,aluminumalloy6063T6waschosenasthethin-walledtubematerial,thetubeswith threedifferentthicknessesof1.0,1.5and1.8mmhadanidenticaloutsidediameterof38mm,and thealuminum-alloyfoam withtwodifferentdensitieswasusedasfillingcores.Theexperimentalresultsdisplaythatunderlow- velocityimpact,thethinner-walledtubesarepronetotensiledamageat theloweredgesofthemiddlesections;thatduetotheinertiaeffect,thepunchforcesunderlow-velocityimpactarehigherthanthoseunderquasi- staticload.Inaddition,thelocalindentationbylowvelocityimpactislargerthanthatbyquasi- staticload,whichmakesthetensilefailureofthelower edgeofthestructuredelay.Hence,thebendingstiffnessofthemiddlesectionsunderlow-velocityimpactsignificantlydecreasesandtheultimatedisplacementwhenthestructuresfractureincreases.
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