【英文标准名称】:Testingofthemagneticpropertiesofelectricalsheetsandcores;determinationofthecomplexpermeabilityanditsreciprocalvalueinanalternatingmagneticfield
【原文标准名称】:电工钢片和铁芯的磁特性检验.交变磁场中综合导磁率及其倒数的测定
【标准号】:DIN50466-1975
【标准状态】:作废
【国别】:德国
【发布日期】:1975-09
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:圆;堆芯;电工钢片;叠层铁芯;特性;电流互感器;薄板材;试验;复杂;渗透率;测量;电子电源
【英文主题词】:permeability;properties;measurement;testing;sheetmaterials;circles(geometry);electronicpowersupplies;complex;currenttransformers;laminatedcores;cores;electricalsheets
【摘要】:
【中国标准分类号】:H21
【国际标准分类号】:6035;2102
【页数】:7P;A4
【正文语种】:德语


【英文标准名称】:Flangesandtheirjoints-Designrulesforgasketedcircularflangeconnections-Calculationmethod
【原文标准名称】:法兰和接头.带衬垫的环形法兰连接的设计规则.计算方法
【标准号】:BSEN1591-1-2001
【标准状态】:作废
【国别】:英国
【发布日期】:2001-08-15
【实施或试行日期】:2001-09-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:螺栓连接;设计计算;圆形;法兰;数学计算;法兰管件;连接;衬垫;设计;密封的
【英文主题词】:Calculatingmethods;Circularshape;Design;Designations;Flangeconnections;Flangedfittings;Flanges;Force;Gaskets;Loading;Lockingandlocatingdevices;Materials;Mathematicalcalculations;Pipecouplings;Ratings;Screws(bolts)
【摘要】:1GeneralThisEuropeanStandarddefinesaCalculationmethodforbolted,gasketed,circularflangejoints.Itspurposeistoensurestructuralintegrityandcontrolofleaktightness.ENV1591-2givesvaluesforgasketpropertieswhichcanbeusedintheCalculationmethod.2RequirementforuseoftheCalculationmethodWherepermitted,theCalculationmethodisanalternativetodesignvalidationbyothermeanse.g.-specialtesting;-provenpractice;-useofstandardflangeswithinpermittedconditions.3Validity3.1GeometryTheCalculationmethodisapplicabletotheconfigurationshaving:-flangeswhosesectionisgivenormaybeassimilatedtothosegiveninFigures4to12;-fourormoreidenticalboltsuniformlydistributed;-gasketwhosesectionandconfigurationafterloadingcanbeassimilatedbyoneofthosegiveninFigure3;-flangedimensionwhichmeetthefollowingconditions:a)0,2≤bF/eF≤5,0;0,2≤bL/eL≤5,0b)eF≥max{e2;dB0;pB×(0,01...0,10)×pB/bF}c)coss≥1/(1+0,01ds/es)NOTE1Forexplanationsofsymbolsseeclause3.NOTE2TheconditionbF/eF≤5,0neednottobemetforcollarincombinationwithlooseflange.NOTE3TheconditioneF≥pB×(0,01...0,10)pB/bFisforlimitationofnon-uniformityofgasketpressureduetospacingofbolts.Thevalues0,01and0,10aretobeappliedforsoft(non-metallic)andhard(metallic)gasketsrespectively.AmoreprecisecriterionisgiveninannexA.NOTE4Attentionmayneedtobegiventotheeffectsoftolerancesandcorrosionondimensions;referenceshouldbemadetoothercodesunderwhichthecalculationismade,forexamplevaluesaregiveninEN13445andEN13480.ThefollowingconfigurationsareoutsidethescopeoftheCalculationmethod:-flangesofessentiallynon-axisymmetricgeometry,e.g.splitlooseflanges,webreinforcedflanges;-flangeconnectionshavingdirectorindirectmetaltometalcontactbetweenflangesinsideand/oroutsidethegasket,insideand/oroutsidetheboltcircle,exceptthespecialcaseofspacer-seatedflanges,whichiscoveredinannexG.3.2MaterialsValuesofnominaldesignstressesarenotspecifiedinthisCalculationmethod.Theydependonothercodeswhichareapplied,forexamplethesevaluesaregiveninEN13445andEN13480.Designstressesforboltsaretobedeterminedasforflangesandshells.Themodelofthegasketsismodelledbyelasticbehaviourwithaplasticcorrection.Forgasketsinincompressiblematerialswhichpermitlargedeformations(forexample:flatgasketswithrubberasthemajorcomponent),theresultsgivenbytheCalculationmethodcanbeexcessivelyconservative(i.e.requiredboltingloadtoohigh,allowablepressureofthefluidtoolow,requiredflangethicknesstoolarge,etc.)becauseitdoesnottakeaccountofsuchproperties.3.3LoadsThisCalculationmethodappliestothefollowingloadtypes:-fluidpressure:internalorexternal;-externalloads:axialforcesandbendingmoments;-axialexpansionofflanges,boltsandgasket,inparticularduetothermaleffects.3.4MechanicalmodelTheCalculationmethodisbasedonthefollowingmechanicalmodel:a)Geometryofbothflangesandgasketisaxisymmetric.Smalldeviationssuchasthoseduetoafinitenumberofbolts,arepermitted.Applicationtosplitlooseflangesorovalflangesisnotpermitted.b)Theflangeringcross-section(radialcut)remainsundeformed.Onlycircumferentialstressesandstrainsintheringaretreated;radialandaxialstressesandstrainsareneglected.Thispresuppositionrequirescompliancewithcondition1.3.1a).c)Theflangeringisconnectedtoacylindricalshell.Ataperedhubistreatedasbeinganequivalentcylindricalshellofcalculatedwallthickness,whichisdifferentforelasticandplasticbehaviour,butalwaysbetweentheactualminimumandmaximumthickness.Conicalandsphericalshellsaretreated
【中国标准分类号】:J15
【国际标准分类号】:23_040_60
【页数】:52P;A4
【正文语种】:英语