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
2014-01-01
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
