風力機鋼結構塔架及底座力學特性與強度分析.pdf

1、廣東工業(yè)大學碩士學位論文風力機鋼結構塔架及底座力學特性與強度分析姓名：趙世林申請學位級別：碩士專業(yè)：結構工程指導教師：李德源20090524廣東T業(yè)大學碩士學位論文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