【英文标准名称】:PracticeforEstimatingtheApproximateResidualCircumferentialStressinStraightThin-WalledTubing
【原文标准名称】:估算直薄壁管中近似剩余周边应力惯例
【标准号】:ANSI/ASTME1928-1999
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【实施或试行日期】:1999-12-07
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:金属导管;质量要求;应力
【英文主题词】:metalconduits;stress;qualityrequirements
【摘要】:Aqualitativeestimateoftheresidualcircumferentialstressinthin-walledtubingmaybecalculatedfromthechangeinoutsidediameterthatoccursuponsplittingalengthofthetubing.Thispracticeassumesalinearstressdistributionthroughthetubewallthicknessandwillnotprovideanestimateoflocalstressdistributionssuchassurfacestresses.(Veryhighlocalresidualstressgradientsarecommonatthesurfaceofmetaltubingduetocolddrawing,peening,grinding,etc.)TheHatfieldandThirkellformula,aslatermodifiedbySachsandEspey,providesasimplemethodforcalculatingtheapproximatecircumferentialstressfromthechangeindiameterofstraight,thin-walled,metaltubing.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:77_140_75
【页数】:
【正文语种】:英语