張力膜結(jié)構(gòu)的非線性有限元分析.pdf

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：王志明申請學(xué)位級別：碩士專業(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