Strain-rateeffectsondynamicstrengthofbrittlematerials

YAN Cheng; OU Zhuo-cheng; DUAN Zhuo-ping; HUANG Feng-lei

doi:10.11883/1001-1455(2011)04-0423-05

Volume 31 Issue 4

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YAN Cheng, OU Zhuo-cheng, DUAN Zhuo-ping, HUANG Feng-lei. Strain-rateeffectsondynamicstrengthofbrittlematerials[J]. Explosion And Shock Waves, 2011, 31(4): 423-427. doi: 10.11883/1001-1455(2011)04-0423-05

Citation:

YAN Cheng, OU Zhuo-cheng, DUAN Zhuo-ping, HUANG Feng-lei. Strain-rateeffectsondynamicstrengthofbrittlematerials[J]. Explosion And Shock Waves, 2011, 31(4): 423-427. doi: 10.11883/1001-1455(2011)04-0423-05

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Strain-rateeffectsondynamicstrengthofbrittlematerials

doi: 10.11883/1001-1455(2011)04-0423-05

1.
StateKeyLaboratoryofExplosionScienceandTechnology,

Funds:

NationalNaturalScienceFoundationofChina(10872035)

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Corresponding author: OU Zhuo-cheng
Publish Date: 2011-07-25

Abstract

Abstract

Anexplicitexpressionforthestrain-rateeffectontheuniaxialtensilestrengthofbrittlematerialsunderdynamicloadingswasderivedbysolvingthewaveequationtogetherwiththes -calledfinitestructural- timefailurecriterion.Itisshownthatthereisanobviousstructuralresponsecharacteristicforthedynamicstrength; thatis,apartfromonthestrainrateandthestaticmaterialconstants, itdependsremarkablyontheloadingaswellastheinteractionbetweentheloadingfeatures andthematerial,andthusthedynamicstrengthcannotbeoneoftheintrinsicmaterialproperties. Moreover,itisalsofoundthatthepreviousexperimentaldatashouldhaveintrinsicallyhighdiscretenessbecausethedynamicstrengthsofmaterialattaind fferentvaluesunderdifferentloadings.
- mechanicsofexplosion,
- strain-rateeffect,
- failurecriterion,
- brittlematerials,
- dynamic loadings