資源描述：
《含殘余應(yīng)力x70鋼與接頭ctod設(shè)計(jì)曲線應(yīng)用分析》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、武漢理工大學(xué)碩士學(xué)位論文thismethodisbasedonBS7910-2005(Guidetomethodsforassessingtheacceptabilityofflawsinmetallicstructures)specificationsof2classaratingcurveisdeducedanewCTODdesigncurve,named"BS79102A-CTODdesigncurve;TheCTODdesigncurveissuitableforelastoplasticrangeandmechanicalpropertiesofheterogeneouswelded
2、joint,basedonthecurveofCTODdesigntypeIthroughthecracklengththresholdformulaarederived,thismethodbreaksthroughthetraditionalcomputingthroughthecracklengththresholdislimitedtotheshortageoftheelasticstage,butalsoconsiderstheweldingandtheresidualstressofthematerialfracturetoughnessontheinfluenceofcracks
3、tructuresafetyperformance.2)byadoptingthetechnologyofcelldeath,thecombinationofCTODdefinition,directcalculatingthecriticalCTODvaluematerials.Andwilltestthematerialfracturetoughness(thecriticalvalueofCTOD)comparedwiththeresultsofANSYSnumericalanalysis.3)usingtheANSYSsoftware,theestablishmentofX70pipe
4、linesteelVgrooveANSYSmodeloftemperaturefieldofX70steelplateandjointandweldingresidualstressfieldcalculationandanalysisinturn.4)analysisBS79102A-CTODdesigncurvederivedthecalculationofmodeIcracklengthformulaofthecriticalvalue,theformulatotheweldingresidualstress,fracturetoughnessandtypeIthroughcrackle
5、ngthtotherelationsbetweenthecriticalvalue,usingtheMATLABsoftwaretomapthesurfaceofrelationshipbetweenthem,inordertodirectobservation.5)usingANSYStocalculatetheX70steelafterweldingresidualstressdistribution,undertheconditionofthecontainingweldingresidualstressisobtained,throughthemodeIcracklengththres
6、holdnumericalsizedistributionalongthelengthdirectioncomponent.UsingTheBS7910-CTODdesigncurvetodetermingthethecriticalvalueofcracklengthofX70steelandweldedisscientificandserious,itiscanbeusedforreferenceofpressurevesselsandpipingproductionandresearchenterprise.KeyWords:weldingresidualstress;CTODdesig
7、ncurve;X70Steel;weldedjointIV萬(wàn)方數(shù)據(jù)武漢理工大學(xué)碩士學(xué)位論文目錄摘要.....................................................................................................................IAbstract.........................
