波箔片制造误差对径向波箔轴承静刚度的影响  

Influence of Manufacturing Errors on Structural Stiffness of Journal Bump-Type Foil Bearing

作　　者：叶寅淼 马希直[1] YE Yinmiao;MA Xizhi(Helicopter Transmission Technology Key Laboratory,Nanjing University of Aeronautics and Astronautics,Nanjing Jiangsu 210016,China)

机构地区：[1]南京航空航天大学直升机传动技术国防科技重点实验室,江苏南京210016

出　　处：《润滑与密封》2024年第1期40-45,共6页Lubrication Engineering

摘　　要：为探究制造误差对径向波箔轴承的影响,基于Timoshenko梁单元建立波箔片变形的简化模型,基于ABAQUS建立波箔片的实体模型,并对比2种模型下波箔片的静刚度。结果显示,Timoshenko梁模型和实体模型的波箔片静刚度曲线较为吻合,且均呈线性变化。建立径向波箔轴承的实体模型,对轴颈进行位移加载,分析轴承的静刚度特性。结果显示,在考虑摩擦时,轴承的静刚度存在明显的滞回特性。设计存在2种不同误差类型的径向波箔轴承,并对其静刚度特性进行分析,发现波高误差对静刚度的影响大于波距误差,且控制起主要支承作用的波纹的波高误差能够有效降低制造误差对径向波箔轴承静刚度的影响。In order to find the influence of manufacturing errors on journal bump-type foil bearing,a foil deformation model was established based on Timoshenko beam element,a solid model of the bearing was established based on ABAQUS,and the structural stiffness of the two models was compared.The results show that the structural stiffness curves of the foil of the Timoshenko beam model and the solid model are relatively consistent,and both show linear changes.The solid model of the journal bump-type foil bearing was established,the shaft was loaded with displacement to find the structural stiffness characteristics of the bearing.It is found that there is an obvious hysteresis curve in the structural stiffness curve of the bearing when considering friction.The journal bump-type foil bearings with two different types of manufacturing errors were designed,and their structural stiffness characteristics were analyzed.It is found that the influence of bump height error on the structural stiffness is greater than that of bump length error,and controlling the bump height error of the bump that plays the main supporting role can well weaken the influence of manufacturing error on the structural stiffness of journal bump-type foil bearing.

关 键 词：波箔轴承 箔片变形 静刚度 制造误差 

分 类 号：TH133.35[机械工程—机械制造及自动化]