预览加载中，请您耐心等待几秒...

具有初始弯曲的压气机转子振动特性分析.docx

预览
1/2
2/2

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

具有初始弯曲的压气机转子振动特性分析 Abstract: Thispaperanalyzesthevibrationcharacteristicsofacompressorrotorwithinitialbending.Thestudyaimstoinvestigatetheeffectsofinitialbendingonthedynamicresponseoftherotorandprovideinsightsintorotordesignandmaintenance.Theanalysisinvolvesnumericalsimulationsbasedonthefiniteelementmethodandexperimentalvalidationusingstraingauges.Theresultsindicatethatthepresenceofinitialbendingsignificantlyaffectsthevibrationamplitude,naturalfrequencies,andmodeshapesoftherotor.Furthermore,thefindingssuggestthatpropermeasuresshouldbetakentocompensateforinitialbendingandreducetheriskofexcessivevibration. 1.Introduction: Compressorrotorsarekeycomponentsinvariousindustrialapplications,suchaspowergeneration,refrigeration,andaircompression.Thevibratingbehaviorofacompressorrotorhasadirectimpactonitsperformance,reliability,andlongevity.Therefore,itiscrucialtocomprehensivelyanalyzethevibrationcharacteristicsofacompressorrotortoensureitssafeandefficientoperation. Inpracticalsituations,compressorrotorsaresubjecttovarioussourcesofexcitations,suchasunbalancedforces,aerodynamicforces,andflow-inducedvibrations.Additionally,therotormayexperienceaninitialbendingduetomanufacturingimperfectionsorexternalfactors.Thisinitialbendingcansignificantlyaffectthedynamicresponseoftherotor,leadingtoundesirableconsequencesifnotproperlyaddressed. 2.Methodology: Toinvestigatetheeffectsofinitialbendingonthevibrationcharacteristicsofacompressorrotor,numericalsimulationsusingthefiniteelementmethod(FEM)wereconducted.Athree-dimensionalmodeloftherotor,includingtheblades,rotorshaft,andsupportingbearings,wascreated.Theinitialbendingwasintroducedbyapplyingapredefineddisplacementataspecificlocationalongtherotorshaft. TheFEManalysisinvolvedsolvingtheequationsofmotionfortherotorsubjectedtotheexcitations.Thenaturalfrequenciesandmodeshapesoftherotorweredeterminedusingeigenvalueanalysis.Theresultswerethencomparedwiththecasewithoutinitialbendingtoevaluatetheeffectsofinitialbendingonthevibrationcharacteristics. T