Title of article :
InvestigationonconstrainteffectofreactorpressurevesselunderpressurizedthermalshockOriginalResearchArticle
Author/Authors :
Jin-SuKim، نويسنده , , Jae-BoongChoi، نويسنده , , Young-JinKim، نويسنده , , Youn-WonPark، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Abstract :
Inrecentyears,theintegrityofreactorpressurevessels(RPVs)underpressurizedthermalshock(PTS)accidenthasbeentreatedasoneofthemostcriticalissues.UnderPTScondition,thecombinationofthermalstressduetoasteeptemperaturegradientandmechanicalstressduetointernalpressurecausesconsiderabletensilestressinsidetheRPVwall.Asaresult,cracksontheinnersurfaceofRPVscanexperienceelastic–plasticbehaviorthatcanbeexplainedusingtheJ-integral.Insuchacase,however,theJ-integralmaypossiblyloseitsvalidityduetotheconstrainteffect.Thedegreeofconstrainteffectisinfluencedbytheloadingmode,thecrackgeometryandthematerialproperties.Inthispaper,three-dimensionalfiniteelementanalysesareperformedforvarioussurfacecrackstoinvestigatetheeffectofcladthicknessandcrackgeometryontheconstrainteffect.Atotalof36crackgeometriesareanalyzedandresultsarepresentedbythetwo-parametercharacterizationbasedontheJ-integralandtheQ-stress.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
