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Volume 31 Issue 1
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Article Navigation >  Explosion And Shock Waves  > 2011  >  31(1): 81-87
ZHANG Wei, XIAO Xin-ke, WEI Gang. Constitutiverelationandfracturemodelof7A04aluminumalloy[J]. Explosion And Shock Waves, 2011, 31(1): 81-87. doi: 10.11883/1001-1455(2011)01-0081-07
Citation: ZHANG Wei, XIAO Xin-ke, WEI Gang. Constitutiverelationandfracturemodelof7A04aluminumalloy[J]. Explosion And Shock Waves, 2011, 31(1): 81-87. doi: 10.11883/1001-1455(2011)01-0081-07
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Constitutiverelationandfracturemodelof7A04aluminumalloy

doi: 10.11883/1001-1455(2011)01-0081-07
  • 1.

    HyperVelocityImpactResearchCenter,HarbinInstituteofTechnology,

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NationalNaturalScienceFoundationofChina(11072072)

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  • Corresponding author: ZHANG Wei
  • Publish Date: 2011-01-25
    Abstract
  • Thequasi-staticanddynamicconstitutiverelationaswellasthefracturemodelof7A04aluminumalloy, fromroomtemperatureto250 ℃,wereinvestigatedbyusingauniversaltestingmachine, atorsiontestingmachineandtheTaylorimpacttest.Basedontheexperimentalresults,the strainhardeningtermoftheJohnson-Cookstrengthmodelandthetemperaturesofteningiteminthe Johnson-Cookfracturemodelweremodified.Thematerialconstantswerecalibratedbyacombination ofexperimentaltestsandnumericalsimulations.Experimentalresultsshowthatboththestrainand strainratehardeningeffectarenotsignificantandthatfracturestrainincreaseswiththeincreaseof temperatureandthedecreaseofeitherstresstriaxialityorstrainrate.
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