摘要
Thewindenergyindustryhasbeengrowingrapidlyduringthepastdecades.Alongwiththisgrowth,engineeringproblemshavegraduallyemergedinthewindpowerindustry,includingthoserelatedtothestructuralreliabilityofturbinetowers.Thisstudyproposesarapidseismicanalysismethodologyforexistingwindturbinetowerstructures.Themethodisdemonstratedandvalidatedusingacasestudyona1.5MWtubularsteelwindturbinetower.Threefiniteelement(FE)modelsaredevelopedfirst.Fieldtestsareconductedtoobtaintheturbinetower’svibrationalcharacteristics.Thetestsinclude(1)remotelymeasuringthetowervibrationfrequenciesusingalongrangelaserDopplerVibrometerand(2)monitoringthetowerstructuralvibrationbymountingaccelerometersalongtheheightofthetubularstructure.In-situmeasurementsareusedtovalidateandupdatetheFEmodelsofthewindturbinetower.WiththeupdatedFEmodelthatrepresentsthepracticalstructuralconditions,seismicanalysesareperformedtostudythestructuralfailure,whichisdefinedbythesteelyieldingofthetubulartower.Thisresearchisanticipatedtobenefitthemanagementoftheincreasingnumberofwindenergyconvertersbyprovidinganunderstandingoftheseismicassessmentofexistingtubularsteelwindturbinetowers.
出版日期
2015年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
