转子在非均匀温度场下的瞬态振动响应特性研究

打开文本图片集

关键词：转子；瞬态动力学；非均匀温度场；热起动；热弯曲 中图分类号：TH133.3；O325 文献标志码：A DOI：10.16385/j.cnki.issn.1004-4523.202312043

Abstract：Theotorthmoelasticouplingvbationuderon-unfotemperaturefeldwillcauseprobemssuchassuddenchangeofotor vibratioaracteristicsddaicibalaeespciallinteealtartingpressofrotatimacherysuchaseoegisndgs turbines.Consideringthifluenftesatialtmpeatuefelddstribtiateolasticoupledotordaisodelosidigte axialandadial-uotepeatrefesispropsdadtealfoatioofotorisalettoeingiatio forcebasedonteotortalachpenomenonadathoreticalaalysodelofthtrasintdyaicracteristisofotorih continuouschangesofaxialparametersundervariableworkingcondionsisestablished.Theresultssowthattheotorasalargevibration displacementduetoteitialtaldfoatiinospeditealoftapupproes.Withteseofteogte vibrationamplitudeoftemeasuigpotinotstartprocesofteotoricreasapidlywithteieaseoftsutdoadcolig time，andthendecreasesslowlyandgraduallapproachesO，whichisconsistentwiththerdialtemperaturediferencetrendoftherotor cooligprocs.ahsulspictetsietsposftdereteroeusmpatureeldisat enginerigsigificaefortevibatisuppresioofteteolasticouledotoradtemoitongadfaultdiagosisofththal bending vibration.

Keywords：rotor; transient dynamics;non-uniform temperature field;hot starting;thermal bendin

航空发动机、船舶燃气轮机等高速旋转机械，长期在非均匀温度场工况下工作，轴向温度不均匀会导致转子轴向方向上的结构刚度变化，引起振动频率和模态的改变；径向温度不均匀将导致转子动态失衡，增加振动和机械磨损，降低系统的可靠性和效率。（剩余15100字）