含不同心或错边焊缝缺陷压力管道承载能力分析

3362006JOURNALOFBEIJINGUNIVERSITYOFCHEMICALTECHNOLOGYVol.33,No.620063(,100029):,,,,:;;;:TG404:2005212207:,1981,3E2mail:[e-mail],,[1];,[2];,,,D/t[3][4],[5],,,,1111660mm,9mm,16MnANSYS,,,,6m,,(),,SOLID185(8);,,(),,,,Y=0Y,X=0X,,11211211JB473219952,,3:5013MPa,(),40mm11PLPL+PbFig.1EffectofmisalignmentanglesonPL,PL+Pbalongpath1,(),,1231121211MPa3(PL),(PL+Pb)1,PLPL+Pb,,PL+PbPL115,,PL,1PL,1PL11MPa3Table1Stressintensitycalculationresultsalongthe3pathsforaninternalpressureof1MPaandangleof3/MPaPLPL+Pb137151381323813123317935144351353351973616836165113,,110,1,1PLPL+Pb1,,PL,PL,JB473219952,PL115Sm=294MPa,PL115Sm,2,,,,PLSm,,22Fig.2Effectofmisalignmentanglesonload2carryingca2pacityofthepressurizedpipewithmisalignmentde2fects2,,PL115Sm:P=8111-010852(1)PLSm:P=5143-010567(2),P,MPa;,()22116m,,0153mm,015mm21221211,272006,40mm,7080mm,,212121MPa0153mm,,,PL,,PL113,PL115SmPLSm,33Fig.3Effectofunfitnessquantitiesontheload2carryingcapacityofthepressurizedpipewithdefects3,,PL115Sm:P=8111-010926(3)PLSm:P=5143-010617(4),P,MPa;,mm3,Pm,Sm,,660mm9mm196MPa16Mn5143MPa23,115Sm,PL115Sm,5143MPa,,,,(),Sm,PLSm,23,5143MPa,[1],,,.[J].,2004,32(10):11-13.[2],,,.[J].,2004,23(5):27-30.[3].[J].,1997,6(2):14-18.[4],,,.360[J].,2001,20(9):41-44.[5],.[J].,1999(1):1-3.Load2carryingcapacityanalysisofapressurizedpipewithmisalignmentorunfitnessdefectsincircumferentialweldsMENGZou2qingQIANCai2fuSHENJun(CollegeofMechanicalandElectricalEngineering,BeijingUniversityofChemicalTechnology,Beijing100029,China)Abstract:Weldingdefectsinevitablyexistinpressurizedpipesusedfortransportationofoilandmaycausesafetyproblemsasaresultofdecreasingtheload2carryingcapacityofthepipes.Inthispaper,finiteelementanalysisisemployedtostudytheload2carryingcapacityofapressurizedpipewithmisalignmentorotherdefectsinthecir2cumferentialwelds.Foragivenpipe,functionsrelatingtheload2carryingcapacityandquantitiesofmisalign2mentorunfitnessdefectsaregiven.Keywords:pressurizedpipe;weldingdefect;load2carryingcapacity;finiteelementanalysis376: