Theoreticalresearchondynamicstrength

ofanthraciteunderuniaxialimpac

GaoWen-jiao; ShanRen-liang; SuYong-qiang

doi:10.11883/1001-1455(2013)03-0297-06

Volume 33 Issue 3

Mar. 2014

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GaoWen-jiao, ShanRen-liang, SuYong-qiang. Theoreticalresearchondynamicstrengthofanthraciteunderuniaxialimpac[J]. Explosion And Shock Waves, 2013, 33(3): 297-303. doi: 10.11883/1001-1455(2013)03-0297-06

Citation:

GaoWen-jiao, ShanRen-liang, SuYong-qiang. Theoreticalresearchondynamicstrength ofanthraciteunderuniaxialimpac[J]. Explosion And Shock Waves, 2013, 33(3): 297-303. doi: 10.11883/1001-1455(2013)03-0297-06

Citation:

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Theoreticalresearchondynamicstrength ofanthraciteunderuniaxialimpac

doi: 10.11883/1001-1455(2013)03-0297-06

1.
SchoolofSafetyEngineering,NorthChinaInstituteofScienceandTechnology,
2.
Sanhe065201,Hebei,China;
3.
Schoolof MechanicsandCivilEngineering,ChinaUniversityof

Funds:

NationalNaturalScienceFoundationofChina(50374070)

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Corresponding author: GaoWen-jiao
Publish Date: 2013-05-25

Abstract

Abstract

Basedontheexistentinvestigationsthatthemainfailurepatternofanthraciteunderuniaxial impactloadingisthecombineddamageoftensilestressdamage,extensiblestraindamageandunloadingdamage, butcompression-shearingdamageisinfrequent,acompression-extension-tensiondamagemodelwasproposedtoanalyzetheimpact- inducedfractureinanthracite.Andaccordingtotheenergybalanceprincipleandthefracturetheory, thetheoreticalformulaforcalculationofthedynamic strengthintheproposedmodelwasdeducedtodeterminethequantitativerelationshipbetweentherelateddynamicparametersofanthracite. Aseriesofcompressivestrengthsofanthracitewerecalculatedbythededucedformula. Comparisonsshowthatthecalculatedresultsareinagreementwiththe existentmeasuredones.Sothededucedformulacanbeusedtoestimatetheextremestrengthofanthraciteunderuniaxialimpactloadinganditcanrevealthedamagemechanism fanthracite-likeporousmediaunderimpactloading.
- solidmechanics,
- strengthmodel