兆瓦級風(fēng)力機葉片初步設(shè)計中的多學(xué)科優(yōu)化設(shè)計方法研究.pdf

1、浙江工業(yè)大學(xué)碩士學(xué)位論文兆瓦級風(fēng)力機葉片初步設(shè)計中的多學(xué)科優(yōu)化設(shè)計方法研究姓名：劉偉江申請學(xué)位級別：碩士專業(yè)：機械制造及其自動化指導(dǎo)教師：潘柏松；梁利華201110浙江：I：業(yè)大學(xué)碩士學(xué)位論文STUDYoNoPTIMIZATIoNMETHoDoFMUI』rIDISCIPLINARYINPRELIMINARYRELIABILITYDESIGNFoRMWWINDTURBINEBLAJcIEABSTRACTBladeisthemostimpo

2、rtantcomponentinwindturbineAsthewindturbinebecomeslargermegawattwindturbinebladeneedsahigherstandardinreliabilityandCA)stcontr01Usuallythetraditionaldesignmethodofwindturbinebladeistoseparatestructuredesignfromaerodynami

3、cdesignBecausethistraditionalwaywantstomaximizetheeriectiveutilizationofwindenergy，andmakesthewholeframebig，thusleadstoahigherCOstinproducingwindenergyOntheotherhand，withthedevelopmentofnewmaterialsandthemanufacturingtec

4、hnologyofnewmaterialsthetraditionalsafetyfactormethodmaybeconservativeornotsafeBasedonthedesignmathodofReliabilityBasedMultidisciplinaryDesignOptimization(RBMDO)，thisarticleputsforwardthatbothaerodynamicperformanceandstr

5、ucturestrengthshouldbesyntheticallyconsidered，inordertoensurethereliabilityanddecreasetheCOstofWindenergyaswellThemainachievementsofthisarticleareas南1loWS：(1)Optimizationtheaerodynamicshapeofbladebasedontheaerodynamicper

6、formanceFirst，designthebasicparameters，includingthetipspeedratio，airfoilwithaerodynamicdataandSOonThenoptimizationthechordandtwistanglebasedonBladeElementMomentamtheory(BEM)，TheratedpoWerofwindturbinereachs265MWf21Optimi

7、zationstructureofbladebasedonthestructuralstrengthFirst，choosethestructurestyleandmaterialsforthebladeThembasedonthemethodofsafetyfactoroptimizethethicknessofooglassfibeI“reinforeedmaterialsthroughbuildupanoptimizationmo

8、delTheresultsjustcorrespondtealityinboththethicknessandmassdistributionofwindturbinebladeandthetipdeflectionislessthentheallowablevalue(3)BasedontheFirstOrderReliabilityMethod，themethodofreliabilityanalysishasbeenstudied

9、，themethodofreliabilityanalysisinbendingstressofWindturbinebladehasbeenestablished，andtheinfluencedegreeonreliabilityfrommaterialperformancehasbeenexploredFinallytheresultthatvariationcoe硒cientofmaterialstrengthhasthebig

10、gestinfluenceonthereliabilityandtheelasticmodelofthematerialplacesthesecondhasbeenfoundBasedonallthesefindingsthereliabilitydesignmodelofwindturbinebladeandoptimizingthe00glassfiberreinforcedmaterialscanbeestablishedTher

11、esultofthisdesigncorrespondstotheresultofthedesignwhichbasesonthefactorofsafetymethod(4)BasedonXFOILairfoilaerodynamicanalysissoftwareandBEMtheorythemodelofcalculationtherelativethicknessoftheairfoilhasbeensetupandthisma