第59卷第9期2023年5月机械工程学报JOURNALOFMECHANICALENGINEERINGVol.59No.9May2023DOI：10.3901/JME.2023.09.198航空发动机齿轮泵轴承润滑及抗偏载特性分析*①解忠良1,2焦见2杨康2(1.西北工业大学工程力学系西安710072；2.西安电子科技大学机电工程学院西安710071)摘要：针对航空发动机齿轮泵滑动轴承复杂工况下存在的润滑性能不清晰、摩擦特性不明朗的问题，将转轴转速升高，分析光滑油膜和带槽油膜压力变化，增大入口供油压力，观察承载力变化，同时，施加并增大轴承偏载。结果表明，转速升高，光滑油膜正压增大、负压减小，带槽油膜的负压降低，承载能力显著增长，入口压力对承载力的影响逐渐减弱。存在临界入口压力，使得处在低于该值的工况，转速越高，无量纲摩擦因数越大。偏载持续增大，极大可能导致轴承油膜破裂、润滑失效。存在偏载临界点，使得处于临界点以下的轴承性能较好，高于该点的轴承性能较差。此外，偏载具有刚度增强和阻尼增强的作用。研究结果为齿轮泵滑动轴承设计研发及其国产化提供理论依据。关键词：航空齿轮泵；滑动轴承；光滑油膜；带槽油膜中图分类号：TH133StudyontheLubricationandAnti-eccentricLoadCharacteristicsoftheAeroGearPumpBearingXIEZhongliang1,2JIAOJian2YANGKang2(1.DepartmentofEngineeringMechanics,NorthwesternPolytechnicalUniversity,Xi’an710712;2.SchoolofMechanical-ElectricEngineering,XidianUniversity,Xi’an710071)Abstract：Fortheproblemsofuncertainlubricationperformancesandtribologicalcharacteristicsinaerogearpumpjournalbearingunderharshworkingcondition,therotationalspeedisincreasedtoanalyzethepressurevariationofsmoothoilfilmandtheoilfilmwithgroove,theoilsupplypressureisenhancedtoexploredtheload-carryingcapacityandsynchronously,theeccentricloadisappliedandincreased.Itisshownthatwiththeincreaseinspeed，thepositivepressureofsmoothoilfilmincreasesanditsnegativepressuredecreases,thepressureoftheoilfilmwithgroovedescendsandtheload-carryingcapacitysignificantlyincreases.Accordingly,theeffectofinletpressureontheload-carryingcapacityisweakened.Thereisacriticalinletpressurevalue,sothatthehigherthespeedis,thelargerthedimensionlesscoefficientoffrictioniswhentheworkingconditionisbelowthisvalue.Theeccentricloadcontinue...
