Numericalsimulationsonadiabaticsheardeformationsof

921Asteelpureshearhat-shapedspecimens

LI Ji-cheng; CHEN Xiao-wei; CHEN Gang

doi:10.11883/1001-1455(2010)04-0361-09

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LI Ji-cheng, CHEN Xiao-wei, CHEN Gang. Numericalsimulationsonadiabaticsheardeformationsof921Asteelpureshearhat-shapedspecimens[J]. Explosion And Shock Waves, 2010, 30(4): 361-369. doi: 10.11883/1001-1455(2010)04-0361-09

Citation:

LI Ji-cheng, CHEN Xiao-wei, CHEN Gang. Numericalsimulationsonadiabaticsheardeformationsof 921Asteelpureshearhat-shapedspecimens[J]. Explosion And Shock Waves, 2010, 30(4): 361-369. doi: 10.11883/1001-1455(2010)04-0361-09

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Numericalsimulationsonadiabaticsheardeformationsof 921Asteelpureshearhat-shapedspecimens

doi: 10.11883/1001-1455(2010)04-0361-09

1.
InstituteofStructuralMechanics,ChinaAcademyofEngineeringPhysics,

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Corresponding author: CHEN Xiao-wei
Publish Date: 2010-07-25

Abstract

Abstract

IntegratedwithrelativeSHPBtests,theadiabaticsheardeformationofspecimenisobservedbasedonaseriesofnumericalsimulationsofSHPBtestusing921Asteelpureshearhat- shaped specimens.Theinitiationandthepropagationofanadiabaticshearband(ASB)andtherelativedistributionoftemperaturefieldinthespecimenareanalyzed. ItisfoundthatASBisformedasthespread ofanunstablezonewithhightemperatureandhighstraininthetwoendsofshearzone.Thespread speedofanASBisrelatedtotheloadingrate,whilstthewidthofASBisnearlyindependentofthe loadingrate,andequalstoabout70m,i.e.,thewidthofthedesignedshearzone.AlltheASBsare deformedbandscorrespondingtovariousvaluesoftheloadingrate.
- solidmechanics,
- adiabaticsheardeformation,
- finiteelement,
- pureshearhat-shapedspecimen,
- SHPB,
- 921Asteel