• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2023, Vol. 59 ›› Issue (21): 330-340.doi: 10.3901/JME.2023.21.330

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Coupling Mechanism of Wear and Mixed Lubrication for Gas Turbine Ball Bearing Considering Real Rough Surfaces

FENG Yan1, QIU Zhuoyi1, SHI Xiujiang1, LU Xiqun1, SUN Wen1, HUA Deliang1, SUN Huan2   

  1. 1. College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001;
    2. Development and Reform Bureau of Linshu County, Linyi 276799
  • Received:2023-01-22 Revised:2023-07-18 Online:2023-11-05 Published:2024-01-15

Abstract: The service environment of Gas turbine bearing is harsh, the working interface is difficult to establish a full film lubrication state, local roughness peak contact and wear occur, which will affect the interface mixed lubrication state by the influence of surface morphology, and tribological characteristics of the bearing will be further affected At present, there are few studies on the coupling effect of wear and mixed lubrication state considering the real surface roughness for gas turbine rolling bearings. Therefore, in this paper, the turbine ball bearing is taken as a case, considering the contact interface wear, elastic deformation and the effect of measured mechanical surface roughness, the lubrication-contact numerical analysis model under the three-dimensional wear area between rolling body and inner raceway is established, and the wear characteristics of the bearing under different low speed, heavy load and slide-roll conditions are studied.

Key words: gas turbine bearing, mixed lubrication, wear prediction, real machined roughness

CLC Number: