鋁合金帶筋板的力學性能優(yōu)化設計.pdf

1、武漢理工大學碩士學位論文鋁合金帶筋板的力學性能優(yōu)化設計姓名：施利娟申請學位級別：碩士專業(yè)：海洋工程結構指導教師：楊平20100501武漢理工大學碩士學位論文Abstract砧啪【linumsheet‘wi“ribsisasti舔medplatecontai璐scvcralparalleledalumimlmprofilcillasamedireCtionwKc：hismadcbyex饑lsionproccssComp撕ngwidlwel

2、dedSti腩ncdplatesheet—wim曲shasgreatsup謝ori夠Tlle11Seofalumin啪eX劬sionprofileandinte伊alp柚elinlli曲speedshipsmak韶黟鼯tprogressintllefastingandli出c11ingoftr觚spotationbotllinla|1dando維horeWimtlleextellsiVeapplicationofhi曲S仃cIlgthm

3、at耐al，itteIldstobeuscdiIlshipbuildingindus仃yinthef0∞ofthinwalledandlightS仉1Ctumlmelllbers111etensiles乜essofs饑lctIlresis110longermeprominentprobleIllcomparodwimtlles協(xié)Jcture’sbucklingunderCompressionThephenomenonthatstnlc劬

4、1囂losec鋤師ngcapabil時causedbybucl【lingisincreasin西youtstallding強ddesi弘erSmusttakeitintoconsidera_tionARerbuc_kling，thecarryingcapacityofs劬cturesdecreasesandmedefomationincreaSesseriously，wtlicheVermaycauseseriousconsequeIl

5、ceHowt0decreases價Jcturalmaterialst0tllemaxim啪懿tent，bomineconomy鋤dsec嘶夠，hasbeell鋤import鋤tsubjectinstmcnlredeSi班Themechanicalpropenyofthesheetswim曲shasbe％studiedin“smesisFormedesi印oftlleSheetswi廿1幣bs，theeconomical柚dsec嘶ty嘶

6、t甜onhasbeelltal(eIlintoconsiderationwhichmayalsosatisfiedthes觚lctIlredesi班nlleSofthelli曲speedships鋤dasuitablesheet誦th衲sinther觚geofdi毹rent仃鋤SverseloadswillbeprovidedThemainworkint11istllesisisasfollows：(1)BaSedonthel【110w

7、ledgeofprofiledesi盟，tlle叩timumwebheightandsectionalareaofstifI鼬erweb鋤dflaIlgehasbeenacquiredthrou曲meprelimina巧design(2)Finiteel鋤entmethodhaspe渤nnedfortheeigenValuebucklinganalysesofsheetswitllribssubjectedt0uniaXiallyCom

8、pressionAdjustthewebhei曲ttoensll】remattlleelasticlocalplatebucklingh印penSbeforeoverallpanelbucl【lingaIldthestressofoVemllpaIlelbucklingis研e11typerc∞t1argerm鋤tllatoflocalbucl(1ingAnd廿1eIls仃essa11alysisisdonewheIltllesheet