Ontheconstitutivemodelforoxygen-freehigh-conductivitycopper

underhighstrain-ratetension

TangTie-gang; LiuCang-li

doi:10.11883/1001-1455(2013)06-0581-06

Volume 33 Issue 6

Apr. 2014

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TangTie-gang, LiuCang-li. Ontheconstitutivemodelforoxygen-freehigh-conductivitycopperunderhighstrain-ratetension[J]. Explosion And Shock Waves, 2013, 33(6): 581-586. doi: 10.11883/1001-1455(2013)06-0581-06

Citation:

TangTie-gang, LiuCang-li. Ontheconstitutivemodelforoxygen-freehigh-conductivitycopper underhighstrain-ratetension[J]. Explosion And Shock Waves, 2013, 33(6): 581-586. doi: 10.11883/1001-1455(2013)06-0581-06

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Ontheconstitutivemodelforoxygen-freehigh-conductivitycopper underhighstrain-ratetension

doi: 10.11883/1001-1455(2013)06-0581-06

TangTie-gang^,,
LiuCang-li

1.
NationalKeyLaboratoryofShock WaveandDetonationPhysics,InstituteofFluidPhysics,

Funds:

NationalNaturalScienceFoundationofChina(11172279,10872187)

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Corresponding author: TangTie-gang
Publish Date: 2013-11-25

Abstract

Abstract

Tostudythedynamicresponseofmaterialsundertensileloadingathighstrainrates,tensile- loadingexperimentswereconductedonoxygen-freecopperexpandingringsbyapplyinganewexpandingringexperimenttechnique. Theradialvelocitiesofthecopperexpandingringsduringtensile deformationweremeasuredbyVISARorFDI.TheempiricalJohnson-Cook(JC)constitutivemodel wasusedtosimulatetheexpandingprocessofoxygen-freecopperrings.Thecalculatedresultsareobviouslyhigherthantheexperimentalones. SoaregulativeJCmodelfortensiledeformation(RJC)was proposedtoimprovetheempiricalJCconstitutivemodel.IntheRJC model,anewindexterm of strainhardingwasaddedtodescribetheaccumulatedeffectinthedynamictensiledeformationprocess aswellasanewlineartermofstrainratetodescribethestrain-rateeffectundertensileloading.And theparametersoftheRJCmodelwereobtainedbyfittingtotheexperimentdata.ThefurthernumericalresultsshowthattheRJCmodelcandescribetheexpandingdeformationprocessoftheoxygen- freecopperrings.
- solidmechanics,
- oxygen-freecopper,
- highstrain-rate,
- constitutivemodel,
- tension

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