JH-2modelanditsapplicationtonumericalsimulationonAl2O3ceramic

underlow-velocityimpact

YANG Zhen-qi; PANG Bao-jun; WANG Li-wen; CHI Run-qiang

doi:10.11883/1001-1455(2010)05-0463-09

Volume 30 Issue 5

May 2014

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Article Navigation > Explosion And Shock Waves > 2010 > 30(5): 463-471

YANG Zhen-qi, PANG Bao-jun, WANG Li-wen, CHI Run-qiang. JH-2modelanditsapplicationtonumericalsimulationonAl2O3ceramicunderlow-velocityimpact[J]. Explosion And Shock Waves, 2010, 30(5): 463-471. doi: 10.11883/1001-1455(2010)05-0463-09

Citation:

YANG Zhen-qi, PANG Bao-jun, WANG Li-wen, CHI Run-qiang. JH-2modelanditsapplicationtonumericalsimulationonAl2O3ceramic underlow-velocityimpact[J]. Explosion And Shock Waves, 2010, 30(5): 463-471. doi: 10.11883/1001-1455(2010)05-0463-09

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JH-2modelanditsapplicationtonumericalsimulationonAl2O3ceramic underlow-velocityimpact

doi: 10.11883/1001-1455(2010)05-0463-09

1.
SchoolofAstronautics,HarbinInstituteofTechnology,Harbin 150080,Heilongjiang,China

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Corresponding author: YANG Zhen-qi
Publish Date: 2010-09-25

Abstract

Abstract

ParametersoftheJohnson-Holmquistconstitutivemodel(JH-2)weredeterminedforAl2O3 ceramicfromtheexistingliteraturedatabyusingacombinationmethodofexperimentalandnumerical techniques.BasedonthisJH-2modelcontainingdamage,anexplicitfiniteelementanalysiscodeLSDYNA wasappliedtosimulatethedamagemechanismandfragmentationprocessoftheAl2O3ceramicsubjectedtolow- velocityimpactinaSHPBsystem.Theresultsofthisworkmaybesummarizedas follows:Underdynamiccompression,Al2O3ceramicmainlytakesonaxialsplitdamage;Theshorter theloadingtimeoftheincidentcompressionwave,themoreseriouslythespecimensarefragmented; ThespecimenfragmentationmodessimulatedbytheJH-2modelareinagreementwiththoseofthe recoveredspecimensinSHPBtest.
- solidmechanics,
- JH-2model,
- dynamicfragmentation,
- Al2O3ceramic