復(fù)雜型式和外形的空間格構(gòu)結(jié)構(gòu)的強度及穩(wěn)定分析研究.pdf

1、同濟大學(xué)土木工程學(xué)院博士學(xué)位論文復(fù)雜型式和外形的空間格構(gòu)結(jié)構(gòu)的強度及穩(wěn)定分析研究姓名：楊聯(lián)萍申請學(xué)位級別：博士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：錢若軍20061101AbstractABSTRACTThestructuraltheoryisthetheoryanalyzesthestructureelastic—plasticdeformationuntiltobedestroyedundertheoutsideloadaffectioninth

2、eprocessofmaterialsoftensTheprocessofmaterialsoftenisresearchedintraditionalmaterialmechanicselastic—plasticmechanicsandstructuremechanicsfrombartothestructureofbarsystemThegeometricalsoftenisanotherdestroyedformwhichcon

3、tainsgeometricallychangeableinstantaneouslychangeablerigidbodydisplacementcapsizalandslackForspacestructure，themaindestroyedformbygeometricalsoftenisbuckingBecauseofthegeometricaldeformationcausedbygeometricalsoftenbeing

4、notofelasticplasticdeformation，thegeometricaldeformationisunabletobesolvedeffectivelyintraditionalanalyticaltheoryanditshouldberesearchedinmechanicaltheoryInthispaperthebasicconceptofspacestructuresissummarizedfirstlythe

5、maintheoryandthemethodwhichusedtoanalyzesthesoftenofmaterialisdiscussedandtheauthordosomeresearchonestablishingthemethodsandassumptionsofthesetheoriesandthevarietyofvectorsaswellasthestiffproblemsofhypotenuseboundarywhic

6、hcommonlyusedinmodelingspacestructuresTheauthorhasstudiedthetheoryandthemethodofspacestructuresespeciallysinglelayerreticulatedshellsinthispaperAbriefreviewaboutthewholeprocessanalysisofproportionalloadingbasedondiscussi

7、ngtheKoitertheoryismadethetracingbucklingpathanalysistheoriesandthemethodsareadvancedandtheexamplesprovethatthesetheoriesandthemethodscouldbeusedtoanalyzethestructureslimitpointbuckingandtheoffsetloadoftheoffsetbuckingas

8、wellastheminimumoffsetloadInthispaperthefactorswitchaffectingthebuckingofsinglelayerreticulatedshellsareanalyzedinordertoexplainthetheoryofthetracingbucklingpaththeauthorpresentsthemethodsofcomputingthemechanismsTheachie