風(fēng)力機(jī)鋼結(jié)構(gòu)塔架及底座力學(xué)特性與強(qiáng)度分析.pdf

1、廣東工業(yè)大學(xué)碩士學(xué)位論文風(fēng)力機(jī)鋼結(jié)構(gòu)塔架及底座力學(xué)特性與強(qiáng)度分析姓名：趙世林申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：李德源20090524廣東T業(yè)大學(xué)碩士學(xué)位論文ABSTRACTThemethodstudyofmechanicalcharacteristicsandresponseanalysisformainpartsofwindgeneratingsetisoneofkeytechnicalworksduringthelarges

2、caledomesticwindturbinehasbeendevelopedindependentandbatchproduceInthispaper，onthebasisoftheinvestigationaboutthe《Guidelineforthecertificationofwindturbines))issuedbyGermanischerLloydWindEnergieGmbHin2004，thestructurestr

3、ength，stiffness，stabilityanddynamicalcharacteristicsofthemainpartssuchasthesteelstructuraltowerandnacellechassisofawindturbinewereanalyzedbythefiniteelementnumericalanalysistheoryandstructureanalysissoftwareANSYS，andthea

4、nalysisresultswerecomparedandanalyzedwiththeresultsfromtheGLcertificationFirst，theengineeringanalysismethodandfiniteelementnumericalanalysismethodofthebucklinganalysisofwindturbinetowerwithopeninginitsbottomunderthegravi

5、tyofrotor，nacelleandtowerselfarestudiedAsanapplicationcase，thebucklingeigenvaluesandbucklingmodesofa15MWvariablespeedpitchregulatedwindturbinetowerunderthuseccentricloadingarecalculatedTheanalysisresultsshowthattheexiste

6、nceofopeningdeeplyaffectsthebucklingcriticalloadingofthecylindricalshelltowerTherearecertainlimitationsoftheengineeringanalysismethodinsomerelevantstandardsofthetowerbucklinganalysis，andthisanalysisshouldintegrateenginee

7、ringmethodwiththeFEnumericalmethodsometimesWhereafter，thestaticstrengthanddynamicpropertiesofwindturbinenacellechassiswereanalysedwiththefiniteelementsoftwareANSYS，Thekeydisposaltechniquewereinvestigatedinwindturbinenace

8、llechassisstructurefiniteelementanalysissuchasgridmeshing，externalloadsandboundaryconstraintdisposal，andcalculatingskilletcThestaticstrengthandnaturalfrequenciesandvibrationmodesofa750KWwindturbinenacellechassiswerewasca