張力膜結(jié)構(gòu)形態(tài)分析及程序設(shè)計

1、鬻1醛‘0323菏受I亂。飄騷瑟Ⅲ)C：一墼東Jr；J、碩士繇殍030518南大學(xué)位氆叁=，論文張力膜結(jié)構(gòu)形態(tài)分析及程序設(shè)計磷究雀姓名：一三喇墅——導(dǎo)師姓名：墮蓬夔攮申翡學(xué)位綴剁工零碩淪吏邂變?nèi)掌?006纂3閥學(xué)位授鏟學(xué)位一。盎壺纛蘭一禱辯蠶員會熏蓐學(xué)桐專i暾駑駱筮煎王攫除熏替辯|]期2006年3鸛29豳學(xué)位授爭鞠鯔!魚避堡基墾浮閱人東痞大學(xué)碩士學(xué)控論文AbstractTensionedmembranestructuresismadeo

2、fsoftfabricandclenchedbyflexiblecablesorrigidsupportstoproducestiffnessandcoveralargespaceDifferentfromtraditionalstructures，tensionedmembrRilestructuresisaflexiblesystemandtheirstiffnessisprovidedbygeometricalcuredsurfa

3、ceandprestressesTensionedmembranestructuresmustbeprestressedforstiffnessSOthatallinitialequilibriumshapemeetingarchitecturalservicerequirementsCanbeestablished。Soformfindingisthefn“standimportantprocessindesignofmembrane

4、structures，秘lemaincontentsinthispaperareasfottows，1ForcedensitymethodisappliedtoinitialequilibriumshapefindingoftensionedmembranestructuresTheadvantageofthismethodisthatwiththeconstrainedpointcoordinatethecoordinateofeve

5、rynodeearlbekno礙aabysolvingalinearequationgroupandtheproblemofinitialcoordinateandnonlinearconvergencealeavoided。Onthebasisofforcedensitymatrixofcableelement，aforcedensitymatrixoftrianglemembraneelememisintroducedByassem

6、blingforcedensitymatrixofeveryelementthewholeequilibriumequationofthestructurecanbeobtained，whichcanalSObeobtainedbythefiniteelementmethodbyassemblingtheelementstiffnessmatrixsimilarily零赫Sprocessisclearlyandsimpleinconce

7、ptandeasy協(xié)program2ThenonlinearelementmethodiSaemcientmethodfortheformfindingoftensionedmembranestntctttreswhichCallobtainsatisfactoryprecisionandtheuniversalsoftwareforfiniteelementanalysiscallbeadoptedInthispaperamethod

8、usingthesbapederivedbytheforcedensitymethodasthetentativeshapeforform—findingbythenonlinearelementmethodiSadopted，whichconvergencempidlyAobject—orientedprogramiScompletedforthismethod，3秘垃designofmembranestructurecontaint

9、hemembranestructareitselfandthesupportingstlalOtltreAtpresent，thedesignofmembraneanditssupportingstructureiSseparated，whichbringsomeeliorsincalculationduetothedisplacementofthemembraneandthesupportingstructuresCallnotbeh

10、armonizedexactlyInthispapertheeffectofseparatedcalculationforformfindingofthemembraneStructtLrewithdifferentsupportingstructuresisdiscussed。Anewstiffnessmatrixofspacatialbeamelementisintroducedforgeometricnonlinearanalys