基于數(shù)值分析的葉片成形過(guò)程與工藝優(yōu)化研究.pdf

1、重慶大學(xué)碩士學(xué)位論文基于數(shù)值分析的葉片成形過(guò)程與工藝優(yōu)化研究姓名：楊平申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：材料加工工程指導(dǎo)教師：周杰20090501ABSTRACTDiedesignandmanufactureisthekeyofpfinisicityprocesstechnics，whichdirectlydecidethequalityofpartConventionaldiedesignandmanufactureisatrialandelr

2、orcourse，SOitresultsinprolongeddevelopingperiodandincreasedthecostbecauseitneedsthroughandthroughseveraltimesofdesign，manufacture，trialmanufactureandmodificationCAD／CAMisakeytechnologytorealizetheautomationofproductdesig

3、ningandmanufacturingThequalityofproductCanbetangiblyimprovedifthetechnologyisadoptedinproductdesigning，engineeringanalyzingandNCprogramminginthecourseofdevelopmentofproductTheblade，whichistheonlyparttotransfertheenergyto

4、thefluid，isanimportantpartofthefananditsqualityaffectsthefanpropertiesofairpressure，fanflowrate，fanpneumatic，vibration，noise，fraction，whereastheshapeofthe協(xié)bladehasdirectlyeffectsonairpressure，fanflowrate，vibrationSothequ

5、alityandcharacteristicsofthefanareessentiallydeterminedbytheaccuracyoffanblade’SdesignThefanproductsarewidelyusedinelectricpoweraerospace，railtransportation，petrochemicalandheavymining，militarydefenseandSOonByincreasilys

6、trengtheningthescientific，technologyandprocess，thethreedimensionalbladeproductlineisbeingimproveddaybydayThecontentofthisresearchisthefanbladeonMineVentilator，whichhaslagervalueofthethicknessandmorecomplexshapeWhenthewor

7、kpieceisfiat，theheightdifferenceoftwopartsisbigTotheIrregularsurfacelikethis，thequalityoftheproductisdependedonspringbackandwarpingByusingnumericalsimulationtechnologythewholeprocessCanbesimulatedbeforemanufacturingthedi

8、eTheprocessanddieparametersCanbeimprovedbyanalyzingtheregularityandcharacteristicofplasticflowobtainingtheproduct’SconfigurationandvariousfieldquantitiesinformationindifferentstagesandpredictingtheissuableformingdefectsT

9、herebounddeformationofbladesistheshapeandsizedeviationinheattreatmentReducingthespringbackCannotonlydecreasethebladesoperation’Snoisyandvibration，butalsoincreasethefan’SservicelifeHoweverthereisnopossibletoeliminatethede

10、formationIngeneral，themagnitudeofdeformationmustbecontrolledinacertainrangeandcorrectionmethodisusedwhenthedeformationexceedstherequirementOnlybyusingnumericalsimulationtechnologytosimulatethefan’Sreboundandgraspingthere