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1、ComputationalMaterialsScience46(2009)1119–1123ContentslistsavailableatScienceDirectComputationalMaterialsSciencejournalhomepage:www.elsevier.com/locate/commatsciAnalysisofinterfacialfractureinceramic–metalassembliesundereffectofthermalresidualstressesaa,*baA.Drai,B.BachirBouiadjra,M.
2、Meddah,M.BenguediabaLMPM,DepartmentofMechanicalEngineering,UniversityofSidiBelAbbes,BP89,SidiBelAbbes,22000,AlgeriabDepartmentofMechanicalEngineeringUniversityofMascara,Mascara,29000,AlgeriaarticleinfoabstractArticlehistory:Inthisstudy,thefiniteelementmethodisusedtoanalyzethebehavioro
3、finterfacecracksinceramic–metalReceived31March2009assembliesundertheeffectofthermalresidualstresses.ThesestressesareduetotheelaborationprocessofReceivedinrevisedform30April2009thebimaterialjunctions.Thestressintensityfactorisusedasfracturecriterion.Theeffectsofthetemper-Accepted28May
4、2009atureofelaborationandthemetalthicknessonthevariationsofthethermalSIFarehighlighted.TheAvailableonline7July2009obtainedresultsshowthatthemodeoffractureunderthermalresidualstressesforallceramic–metalcou-plesisthemixedmode(opening+sliding).ThemodeII(theslidingmode)isthedominantmode.
5、Keywords:Ó2009ElsevierB.V.Allrightsreserved.InterfacecracksCeramicMetalSIFFiniteelementmethod1.Introductiontoestimatetheresistancetocrackpropagationforinterfacialcrackunderthermalloading.Multi-layeredandcompositesystems,whichoftencontainme-tal/ceramicinterfaces,arewidelyusedinindustr
6、y,bothinmicro-2.Geometricalandfiniteelementmodelselectronicpackagingandstructuralmaterials.TheroleofinterfacesisveryvitaltothestresstransferbetweenthemetalTheselectedgeometricalmodelisacylinderofradiusandceramicandinterfacesinfluencethemechanicalperformancer=12mm;itiscomposedofthreelay
7、ersofmaterials:ceramic–andfracturebehaviorofbimaterialsundervariousloadingcondi-metal–ceramicfromrespectivelengths24-4,8-24mm(Fig.1).tions[1,2].InterfacefractureisacommonfeatureintheadvancedForreasonsofsymmetryonlythequarterofthecylinderisconsid-materialsandmultilayeredstructures[3–5
8、].Duetoamism
