压力容器接管的断裂分析及其工程应用

135200510()JournalofAnhuiInstituteofArchitecture&IndustryVol.13No.5Oct.2005:2005-05-16:(1946-),,,,。(,230022):CT(SCT)SCTCOD。SCT。SCT。:;;:O346.1:A:1006-4540(2005)05-001-04FarctureanalysisofpressurevesslenozzelsanditsapplicationofengineeringZHOUDao-xiang(InstituteofCollegeEducation,AnhuiInstituteofArchitecture&Industry,Hefei230022,China)Abstract:TestingresultsofspecialCTsamplewereintroducedandCODdesigncurveonthisresultsofSCTsamplesgiveninthispaper.MechanicscharacteristicandfracturebehaviorofpressurevesselnozzlescansimulatedandwecanmeasurefatiguerateofnozzlecracksatpressurevesselbytestingofSCTsamples.Keywords:fracturemechanics;pressurevesselnozzle;designcurve、,。1963,Wells,(COD),CODCOD(1)。δ=2πea(1),BardekinWellsδ=2πeya(eey-0.25)(2)1,,,,,,。。,CODCOD“”。,:,(),(),,。。Bardekin,EPRIJ,,,。,(2)。-、。,。211.1,,、。[1,2],(3),。,、、、。3AnzhongLiu[3](4),。41.2[3],。、(5),。,,7。,,,。52()13[3]K1=Yσπヘa,K1;σ;a;Y,Y=8.0-1.77(a/R)-2.90(a/R)2-2.00(a/R)3,。、,。2SCTCOD1988,(SCT)。6,CT,φ。6SCT2.1SCT[4][5]SuperSAP91SCT。z()7。7,、、。8。[5]SCT,、R,R、。8[5]SCT(9),SCT,8,SCT。92.2SCTCODSCTCOD,δ2πaey～eey(10)。10,COD,35:,。。10SCT2.3SCT[6]SCT,SCT。16MnRSCT,,dadN～σyΔδ,11。11SCT11Paris。dadN=2.8288×10-8(σyΔδ)3.2145CTdadN=3.32×10-5(σyΔδ)2.059,SCTCT,。3SCT,、、,SCT。,SCT。COD,,[4]。SCl、,,。1.[M].:,1987:43-50.2.[R].:,1995.3LiuAnzhong,ZhouDaoxiang.Photo-elasticAnaly-sisofthesimulatedPlatesfortheVesselNozzle[C].EnvironmentEffectsonFractureandDamage.Hang-zhou:ZhejiangUniversity,2004.4.---SCTJ[D].:,1994.5.SCT[D].:,1995.6.[D].:,1996.4()13