Ductile failure

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1、DuctilefailureandrupturemechanismsincombinedtensionandshearImadBarsoumLicentiatethesisno.96,2006TRITA,HFL–0407KTHSolidMechanicsSE-10044Stockholm,SwedenPrefaceTheworkinthislicentiatethesiswascarriedoutattheDepartmentofSolidMechanicsattheRoyalInstituteofTechnolog

2、y(KTH)betweenSeptember2002andMarch2006.TheworkwasfinanciallysupportedbytheSwedishResearchCouncilwhichissincerelyacknowledged.IwouldliketothankmyadvisorDr.JonasFaleskogforhisexcellentsupervision,guidanceandsupportduringthespanofthiswork.Thankyouforgivingmetheoppo

3、rtunitytoworkwithyou.IwouldalsoliketothanktheheadofthelaboratoryMr.HansObergforhelpingoutwith¨theexperimentalpartandthedesignofthefixture.ThanksgotoMessrs.BertilDolk,BengtM¨ollerberg,MartinObergandKurtLindqvistformanufacturingthespecimens.D¨r.Torbj¨ornNarstr¨oma

4、tSSABOxel¨osundisacknowledgedforsupplyingthematerial.Iamalsothankfultomycolleaguesthathavecontributedtoastimulatingenvironmentatthedepartment,especiallymyofficematesMr.MateuszStecandDr.KajPettersson.IamimmenselygratefultomyparentsNadhiraandSamirandmybrothersZuhei

5、randFadifortheirendlesssupportandlimitlesslove.Thankyouforbeeingwithmealongtheroadoflifealltheseyears.Godblesseachoneofyou.Finally,Iwouldliketoexpressmyprofoundgratitudetomyfianc´eGorginaZeitoun.Itfeelsgreattohaveyouinmylife!Stockholm,May2006ImadBarsoumListofApp

6、endedPapersPaperA:Rupturemechanismsincombinedtensionandshear—experimentsImadBarsoumandJonasFaleskogSubmittedtoInternationalJournalofSolidsandStructuresPaperB:Rupturemechanismsincombinedtensionandshear—micromechanicsImadBarsoumandJonasFaleskogTobesubmittedforint

7、ernationalpublicationDuctilefailureandrupturemechanismsincombinedtensionandshearIntroductionTheindustrialapplicationofhighstrengthsteelsandhighperformancealuminumalloysinstructuralcomponentshaveincreasedthedemandonunderstandingtheductilefailurebehaviorofthistyp

8、eofmaterials.Inpracticalsituationstheloadingexperiencedincompo-nentsmadeoutofthesematerialscouldbeverycomplexwhenacrackispresent,resultinginmixedmodeductilefailureinvolvingc