摘要
Therestraintintensity(RI)ofthepipelinegirthweldingjointwasinvestigatedusingfiniteelementmethodandexperimentalmethodtopredictthecoldcrackingsusceptibilityofpipelinesteel.ThedistributionofRIalongthegirthweldwasinvestigatedtostudytheinfluenceofweldingpositionontheRI.Subsequently,theeffectsofouterdiameter(OD)andwallthicknessofpipelineontheRIwerestudiedwithABAQUSsoftware.TheresultsshowthattheRIisalmostindependentofweldingposition.TheRIincreasedwiththeincreasingwallthicknessbutdecreasedwiththeincreasingOD.ApredictionmodelofRIwasdevelopedbasedontheeffectsoftheODandthewallthickness.IthasbeenfoundthatthepredictedRIswereingoodagreementwiththeexperimentalvalues.ThemaximumfractionalerrorbetweenthepredictedRIandtheexperimentalvalueswasjustabout10%.Itwasindicatedthattheerrorsweremainlycausedbytheheterogeneousoftheweldbead.
出版日期
2016年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
