Lubrication Characteristics of Journal and Thrust Bearings

A special issue of Lubricants (ISSN 2075-4442).

Deadline for manuscript submissions: closed (30 September 2024) | Viewed by 2199

Special Issue Editors

School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Interests: hydrostatic bearings; machine tools; precision machining; measurement

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Guest Editor
Beijing Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology, Beijing 100124, China
Interests: aerostatic bearing; spindle; machine tool

Special Issue Information

Dear Colleagues,

In recent decades, journal and thrust bearings have included several significant contributions related to key topics such as performance-oriented design, dynamic behavior, and lubrication, which are paving the way for future engineering challenges. Despite the great achievements obtained in the journal and thrust bearings, we are still far from being able to predict the behaviour of the rotor systems involving lubrication or contact interfaces, as well as the sealing. Latest knowledge is of outmost importance to develop strategies to respond and solve the future tricky challenges. 

The current Special Issue aims at bringing together, in the same Issue, contributions from world-leading scientists working in the fields of lubrication characteristics of journal and thrust bearing, with the goal being to deepen our understanding of academic and engineering regarding the latest modelling, simulation, and measurement methods. Contributions are welcome from all scientists working in journal, thrust bearing, and related areas.

Dr. Jun Zha
Prof. Dr. Dongju Chen
Guest Editors

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Keywords

  • journal bearing
  • thrust bearing
  • lubrication characteristics
  • dynamic
  • vibration
  • sealing
  • fluid–solid coupling
  • thermal
  • stability
  • viscosity–temperature effect
  • micro-textured
  • bearing capacity
  • imbalance factors
  • manufacturing errors
  • rotational accuracy
  • friction
  • wear
  • shape optimization
  • maintenance prediction
  • feedback control
  • energy cost reduction
  • simulation and testing methods

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Published Papers (1 paper)

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Research

20 pages, 9739 KiB  
Article
Stability Analysis of the Rotor-Journal Bearing System Considering Shear and Gaseous Cavitation
by Lin Sun, Jianchao Shi, Tao Jiang, Zhen Li, Quntao Xie, Zhaozeng Liu and Weiwei Xu
Lubricants 2024, 12(2), 48; https://doi.org/10.3390/lubricants12020048 - 8 Feb 2024
Viewed by 1606
Abstract
Part of the gas phase within the bearing emanates from the gaseous lubricating medium generated by the phase transition of the liquid lubricant under low pressure, while the remaining portion originates from the expansion of gases, such as air, present in the lubricant. [...] Read more.
Part of the gas phase within the bearing emanates from the gaseous lubricating medium generated by the phase transition of the liquid lubricant under low pressure, while the remaining portion originates from the expansion of gases, such as air, present in the lubricant. This study delves into the impact of vapor and gas cavitation on the stability of the rotor-journal bearing system. Utilizing computational fluid dynamics (CFD), a 3D transient lubrication model is developed for the rotor-journal bearing system. This model integrates a combined cavitation approach, encompassing both vaporous and gaseous cavitation phenomena. Based on a new structured dynamic mesh method, the journal orbits are obtained when the journal moves in the rotor-journal bearing system. In vaporous and gaseous cavitation, shear stress and non-condensable gases (NCG) are incorporated successively. Compared with the combined cavitation model, the basic cavitation model journal orbit amplitude is significantly larger than the combined cavitation model. The carrying capacity of journal bearings under the basic cavitation model is overestimated, leading to a more conservative prediction for system stability. Full article
(This article belongs to the Special Issue Lubrication Characteristics of Journal and Thrust Bearings)
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