1、東南大學(xué)碩士學(xué)位論文張力膜結(jié)構(gòu)的非線性有限元分析姓名：王志明申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：宋啟根周志華2000.3.1ABSTRACTInthisthesis，thecharacteristic，maindesignandcalculationproblemsandmethodsofmembranestructures，theperformanceofallkindsofstructuralmembranematerials
2、aresummarizedAccordingtopresentavailableresultsofdomesticandforeignexperiments，theuniaxialtensilestrength，biaxialtensilestrengthandtearingstrengtharecomprehensivelystudiedThenonlinearrelationshipsofstressandstrainaredisc
3、ussedandthelinearizationproceduresoftheserelationshipsaregivenUsinglargedeformationtheory，geometricallynonlinearfiniteelementequationsforanalyzingmembranestructuresareconductedTheiterationsolutionmethod，incrementsolution
4、methodandmultiiterationsolutionmethodoflargenonlinearequationsandconvergencecriteriaarediscussedandcreatedAgeneralmethodofsolvinginitialequilibriumproblemispresentedWithasmallYoung’Smodulus，theequilibriumshapeshaveaprope
5、rtyofminimalsurfaceForloadanalysis，theorthotropicpropertyofmaterialisconsideredAlso，formulationsofwrinklingarecreatedFinally，acomputerprogramincludingformfinding，loadanalysisanddataoutputsuitableforAutoCADdrawingismadeBy
6、comparingthebenchmarkexamples，itprovesthetheorypresentedinthisthesisiscorrectAlsoitisshownthattheaccuracyofthree—nodetriangularelementfordisplacementandstressissatisfactoryExamplesofformfindingshowthatthemethodofformfind
7、ingpresentedinthisthesisisvalidAsanexample，theprogramanalyzesacablereinforcedtensionmembranestructureunderupanddownwindloadswithprestress，andsomeusefulCOnclusionsareobtainedKeywords：membranestructuresgeometricallynonline
