網(wǎng)殼結(jié)構(gòu)穩(wěn)定性研究.pdf

1、分類號!墮UDC密級Y786195學校代碼10561學號—2—00232000201102華南理工大學碩士學位論文網(wǎng)殼結(jié)構(gòu)穩(wěn)定性研究張偉生指導教師：筮宣武嬰塑旦建箕堂暄建笪邀讓班囂瞳申請學位級別：亟專業(yè)名稱：結(jié)控王捏論文提交日期：211i!!論文答辯日期：!QQ：學位授予單位和日期：堡直堡王塞堂答辯委員會主席：論文評閱人：華南理工大學碩士學位論文AbstractReticulatedshellsstructureisadoptedwid

2、elyinthelargespanstructureforthefollowingadvantages：itslightinweight，greatspanofbuildingstructureandrationalload—bearing，etcButbecauseitshighmaterialutilizationratioandsmallsectionofcomponent，stabilityproblembecomesthema

3、jorresearchcontentsofthereticulatedshellsstructuredesignespeciallysinglelayerreticulatedshellsdesignAndwhetherthestabilityanalysisarecorrectornotisessentialforcorrectlyensuringthesafetyandeconomyofreticulatedshellsstruct

4、ure，guaranteeingabundantreserveofstrengthandstiffnessThemajorworkofthispaperis：earringoutdeeplyresearchtomainstreamnonlinearanalyticaltheoriesofstructureatpresent，andgeneralizingonthebasisoftheoreticalresearchasetofnonli

5、nearfiniteelementanalyticalmethodsuitableforstabilityanalysisofreticulatedshellsstructure，moreoverthispaperhasdevelopedasetofanalysissoftwareNBARS(NonlinearBucklingAnalysissoftwareofReticulatedShells)thatcaranalysemanyki

6、ndsofreticulatedshellsstructuresindependentlyaccordingtothisanalyticalmethodTheresearchworkofthispaperismainlydividedintothreeworkingstagesmainly：theorypreparingandanalyticalmethodgeneralizingstage，analysissoftwaredevelo

7、pinganddebuggingstage，andstabilityanalysingofreticulatedshellsstructurestage，itisalllinkedwithoneanothertofollowinorderandadvancedstepbystepatthreestagesAccordingtostructurenonlinearfiniteelementtheoryincludinggeometricn

8、onlinearitiesandmaterialnonlinearitiesanalyticaltheory，thispapergeneralizesasetofgeometricnonlinearitiesandmaterialnonlinearitiesanalyticalmethodssuitableforreticulatedshellsstructureonthebasisofmanifoldnonlinearanalytic

9、altechnologymoreoveritproposesthedoublenonlinearanalyticalmethodcontainingtheabovetwononlinearitiesanalyticalmethodFormakinganalyticalmethodsoftware，weadoptspacebeamelementmodeltosimulatereticulatedshellsstructurecompone

10、nt，derivetangentstiffnessmatrixofspacebeamelementsuitableforelasticlargedisplaceanalysisandelasto—plasticitystiffnessmatrixconsidermaterialnonlinearities，adoptincrementalloadsmethodandModifiedNewtonRaphsoniterativemethod

11、tosolvethenonlinearequationsset，tracetheloaddisplacementcurveduringbucklingofreticulatedshellsinthispaperAstoinitialimperfection，asensitivefactorweadopt“primarybucklingmodal”ofeigenvaluebucklinganalysisor“nonlinearstatic