API X-100steelisoneoftherecentlydevelopedmaterialsforproductionofgastransportationpipelines which hashighstrengthandtoughness.Inordertostudythefailureofthismaterial,experimentson smooth andnotchedroundbarsand flat notchedspecimenswithdifferentnotchradiusaredone. Whereas thismaterialisseverelyanisotropicinplasticregion,Hill's1948anisotropicplasticitymodelis used tosimulatethismaterial.X-100steelishighlyductileandneckingoccursatearlystagesofplastic region. Lode angle,whichcontainstheeffectofthirdinvariantofdeviatoricstresstensor,alongwith triaxiality factorarestudiedinthefractureofthismaterial.Basedontheseexperimentsandanalysis,a correlation isextractedforthefailurestrainofthismaterialasafunctionoftriaxialityandLodeangle which isveryusefulinpipelinefailureanalysis.

A new experimental failure model based on triaxiality factor and Lode angle, for X-100 pipeline steel

MIRONE, GIUSEPPE
2014

Abstract

API X-100steelisoneoftherecentlydevelopedmaterialsforproductionofgastransportationpipelines which hashighstrengthandtoughness.Inordertostudythefailureofthismaterial,experimentson smooth andnotchedroundbarsand flat notchedspecimenswithdifferentnotchradiusaredone. Whereas thismaterialisseverelyanisotropicinplasticregion,Hill's1948anisotropicplasticitymodelis used tosimulatethismaterial.X-100steelishighlyductileandneckingoccursatearlystagesofplastic region. Lode angle,whichcontainstheeffectofthirdinvariantofdeviatoricstresstensor,alongwith triaxiality factorarestudiedinthefractureofthismaterial.Basedontheseexperimentsandanalysis,a correlation isextractedforthefailurestrainofthismaterialasafunctionoftriaxialityandLodeangle which isveryusefulinpipelinefailureanalysis.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11769/27941
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