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1、内蒙古工业大学硕士学位论文AbstractAsakeycomponenttocapturewindenergy,thewindturbineblademovementsituationsandforcecircumstancesareverycomplex.ThedeterminanttoguaranteeWTG’snobleandstableoperationisgoodstructureandpropertiesofwindturbines.Fibercompositewindbladeisaty
2、picalnon-rotatingbodywhichhasnon-uniformthicknessplacementandcomplexplystructure,anditsperformancevariesfromdifferentlaminateangles,ordersandthicknesses.Therefore,optimizationforcompositefiberplystructuredesignstudiesofwindturbineblades,canprovidetheore
3、ticalbasisandtechnicalsupportforthedesignandmanufactureofwindturbineblades.Onthebasisofexplainingthedomesticandforeignresearchstatusofcompositefiberlaminatestructureoptimizationdesign,andaccordingtothebasics,structuraloptimizationtheoryandmethodsoffiber
4、compositelaminates,wedevelopedasuitableprogramforwindbladestructureoptimization.Thecouplingeffectofbladeperformanceexitsduetothecomplexcouplingmechanismandrelationshipofitsplyparameters.Currenttechnicalwaysandmeanscouldnotsolvethisquestion.Therefore,the
5、paperviewedfromtheengineeringpoint,usedthecombiningmethodoftheoreticalanalysis,finiteelementanalysisandstructuraloptimization,establishedmathematicaloptimizationmodel,appliedhierarchicaloptimizationstrategyandoperatedunivariateparameteroptimizationofply
6、inOptistructtoexploretheoptimallaminateschemeofwindturbineblades.Thefirststageisontheplyangleoptimization.Onthebasisofthelaminatestressanalysis,weestablishalaminateanglemathematicalmodelinrelationshipwithfailurecriterionandstrength,setminimummaximumstre
7、ssofstructureastheoptimizationgoal,regardlaminateangleasthedesignvariablesanduselocalapproximationmethodtooptimizetheplyangle,thenwegetthelaminateangleofwindbladewhichsatisfytheperformancerequirements:0°,±45°and90°.Thesecondstageisontheplythicknessoptim
8、ization.Basedoneachlaminatedplatestiffnessmatrix,weestablishalaminatethicknessmathematicalmodelinrelationshipwithstructuralstiffnessandmass,setminimummaximumstressofstructureastheoptimizationgoal,regardbladequalityandminimalcompl
