Thermal-Induced Synchronous Vibration Instability Characteristics of High-Speed Cantilever Rotor-Bearing Systems

LIU Yang; YU Chengzhi; YUAN Qi

doi:10.7652/xjtuxb202508009

您当前的位置：

首页 >

文章列表页 >

Thermal-Induced Synchronous Vibration Instability Characteristics of High-Speed Cantilever Rotor-Bearing Systems

更新时间：2025-07-30

- Thermal-Induced Synchronous Vibration Instability Characteristics of High-Speed Cantilever Rotor-Bearing Systems
- Journal of Xi’an Jiaotong University Vol. 59, Issue 8, Pages: 88-99(2025)
- 作者机构：
  
  1.西安交通大学能源与动力工程学院， 710049，西安
  2.西安交通大学陕西省叶轮机械及动力装备工程实验室， 710049，西安
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202508009
  CLC： TK263.6
- Received：03 March 2025，
  
  Online First：14 April 2025，
  
  Published：10 August 2025
- 稿件说明：
移动端阅览
LIU Yang, YU Chengzhi, YUAN Qi. Thermal-Induced Synchronous Vibration Instability Characteristics of High-Speed Cantilever Rotor-Bearing Systems[J]. Journal of Xi’an Jiaotong University, 2025, 59(8): 88-99.
DOI：

LIU Yang, YU Chengzhi, YUAN Qi. Thermal-Induced Synchronous Vibration Instability Characteristics of High-Speed Cantilever Rotor-Bearing Systems[J]. Journal of Xi’an Jiaotong University, 2025, 59(8): 88-99. DOI： 10.7652/xjtuxb202508009.

摘要

为探究轴颈温度分布对高速悬臂转子-轴承系统热致同步振动失稳特性（Morton效应）的影响，建立高速悬臂转子三维瞬态热弯曲响应模型，提出了Morton效应失稳阈值判据。首先，对滑动轴承进行三维瞬态热流体动力学计算，考虑空穴效应和温黏效应，采用动态网格模型实现不同工况下的轴颈涡动，获得轴颈表面的周向和轴向温度分布。然后，采用三维实体和一维梁单元有限元模型，分别进行转子热变形和动力学特性计算。最后，通过实验测试结果对所建模型进行验证。研究结果表明：相较于收敛涡动和循环涡动，轴颈发散涡动产生的周向温差更大，转速为10 000 r/min时，轴颈周向温差达到25 K；轴颈表面温度的周向分布曲线越接近正弦曲线、轴颈高温区域的轴向长度越长，转子的热不平衡量越大；提出的失稳阈值判据可精确判断转子-轴承系统的最高工作转速，与避开10%临界转速的传统判据相比，最高工作转速提高了7.2%。该研究可为高速悬臂转子-轴承系统的分析设计提供理论指导。

Abstract

To investigate the influence of journal temperature distribution on thermally-induced synchronous vibration instability (Morton effect) in high-speed overhung rotor-bearing systems

this study establishes a three-dimensional transient thermal bending response model and proposes a novel instability threshold criterion. First

three-dimensional transient thermofluid dynamic calculations are performed for the sliding bearings

considering the cavitation effect and temperature-viscosity effect. A dynamic mesh model is used to simulate the journal whirl under different operating conditions

obtaining the circumferential and axial temperature distributions on the journal surface. Then

three-dimensional solid and one-dimensional beam element finite element models are employed to calculate the thermal deformation and dynamic characteristics of the rotor

respectively. Finally

the established model is validated using experimental test results. The study results indicate that compared to converging whirl and circulating whirl

the diverging whirl generates a greater circumferential temperature difference. At a speed of 10 000 r/min

the circumferential temperature difference reaches 25 K. The closer the circumferential temperature distribution curve of the journal surface is to a sine wave

and the longer the axial length of the high-temperature region on the journal

the greater the thermal imbalance of the rotor. The proposed instability threshold criterion can accurately determine the maximum working speed of the rotor-bearing system

improving it by 7.2% compared to traditional criteria that avoid 10% of the critical speed. This research provides theoretical guidance for the analytical design of high-speed cantilever rotor-bearing systems.

关键词

Keywords

references

KEOGH P S , MORTON P G . Journal bearing differential heating evaluation with influence on rotor dynamic behaviour [J ] . Proceedings of the Royal Society of London: Series A Mathematical and Physical Sciences , 1993 , 441 ( 1913 ): 527 - 548 .

KEOGH P S , MORTON P G . The dynamic nature of rotor thermal bending due to unsteady lubricant shearing within a bearing [J ] . Proceedings of the Royal Society of London: Series A Mathematical and Physical Sciences , 1994 , 445 ( 1924 ): 273 - 290 .

胡启龙 , 何文强 , 管文生 , 等 . 滑动轴承内轴颈涡动引发的热效应分析 [J ] . 热能动力工程 , 2020 , 35 ( 9 ): 22 - 28 .

HU Qilong , HE Wenqiang , GUAN Wensheng , et al . Analysis on thermal effect caused by journal whirl in sliding bearing [J ] . Journal of Engineering for Thermal Energy and Power , 2020 , 35 ( 9 ): 22 - 28 .

SUH J , PALAZZOLO A . Three-dimensional thermo-hydrodynamic Morton effect simulation: part Ⅰ theoretical model [J ] . Journal of Tribology , 2014 , 136 ( 3 ): 031706 .

SUH J , PALAZZOLO A . Three-dimensional thermo-hydrodynamic Morton effect analysis: part Ⅱ parametric studies [J ] . Journal of Tribology , 2014 , 136 ( 3 ): 031707 .

TONG Xiaomeng , PALAZZOLO A , SUH J . Rotordynamic Morton effect simulation with transient, thermal shaft bow [J ] . Journal of Tribology , 2016 , 138 ( 3 ): 031705 .

TONG Xiaomeng , PALAZZOLO A . Tilting pad gas bearing induced thermal bow-rotor instability (Morton effect) [J ] . Tribology International , 2018 , 121 : 269 - 279 .

TONG Xiaomeng , XU Weiqing , SHI Yan , et al . Transient rotordynamic thermal bow (Morton effect) modeling in flexure-pivot tilting pad bearing systems [J ] . Tribology International , 2023 , 177 : 107954 .

SHIN D , SUH J , PALAZZOLO A . Parametric study of flexure pivot bearing induced thermal bow-rotor instability (Morton effect) [J ] . Journal of Tribology , 2022 , 144 ( 7 ): 071801 .

金超武 , 董岳 , 苏浩 , 等 . 磁悬浮轴承转子热弯曲振动特性研究 [J ] . 振动与冲击 , 2022 , 41 ( 4 ): 36 - 47 .

JIN Chaowu , DONG Yue , SU Hao , et al . Characteristics of thermal-bow vibration in an active magnetic bearing supported rotor [J ] . Journal of Vibration and Shock , 2022 , 41 ( 4 ): 36 - 47 .

HASSINI M A . Numerical and experimental analysis of stable, unstable, and limit cycle spiral vibrations [J ] . Mechanical Systems and Signal Processing , 2023 , 193 : 110258 .

CHANG Zeyuan , HOU Lei , MASARATI P , et al . Modeling and nonlinear analysis of a coupled thermo-mechanical dual-rotor system [J ] . Nonlinear Dynamics , 2024 , 112 ( 20 ): 17811 - 17842 .

夏添 , 杨建刚 . 微小间隙内润滑油剪切流动引发的不稳定振动现象分析 [J ] . 动力工程学报 , 2024 , 44 ( 1 ): 38 - 44 .

XIA Tian , YANG Jiangang . Analysis of unstable vibration caused by shear flow of lube oil in micro-gap [J ] . Journal of Chinese Society of Power Engineering , 2024 , 44 ( 1 ): 38 - 44 .

LI Qiang , LIU Shulian , PAN Xiaohong , et al . A new method for studying the 3D transient flow of misaligned journal bearings in flexible rotor-bearing systems [J ] . Journal of Zhejiang University Science: A , 2012 , 13 ( 4 ): 293 - 310 .

HAGEMANN T , SCHWARZE H . Theoretical and experimental analyses of directly lubricated tilting-pad journal bearings with leading edge groove [J ] . Journal of Engineering for Gas Turbines and Power , 2019 , 141 ( 5 ): 051010 .

YANG J , PALAZZOLO A . Three-dimensional thermo-elasto-hydrodynamic computational fluid dynamics model of a tilting pad journal bearing: part Ⅱ dynamic response [J ] . Journal of Tribology , 2019 , 141 ( 6 ): 061703 .

YANG J , PALAZZOLO A . Three-dimensional thermo-elasto-hydrodynamic computational fluid dynamics model of a tilting pad journal bearing: part Ⅰ static response [J ] . Journal of Tribology , 2019 , 141 ( 6 ): 061702 .

YANG J , PALAZZOLO A . Deep convolutional autoencoder augmented CFD thermal analysis of bearings with inter pad groove mixing [J ] . International Journal of Heat and Mass Transfer , 2022 , 188 : 122639 .

YANG J , PALAZZOLO A . Morton effect prediction with validation using a CFD based CNN for pad inlet temperatures [J ] . Mechanical Systems and Signal Processing , 2023 , 185 : 109827 .

YANG J , PALAZZOLO A . Tilt pad bearing distributed pad inlet temperature with machine learning: part Ⅰ static and dynamic characteristics [J ] . Journal of Tribology , 2022 , 144 ( 6 ): 061801 .

YANG J , PALAZZOLO A . Tilt pad bearing distributed pad inlet temperature with machine learning: part Ⅱ Morton effect [J ] . Journal of Tribology , 2022 , 144 ( 6 ): 061802 .

SINGHAL A K , ATHAVALE M M , LI Huiying , et al . Mathematical basis and validation of the full cavitation model [J ] . Journal of Fluids Engineering , 2002 , 124 ( 3 ): 617 - 624 .

BALBAHADUR A C , KIRK R G . Part Ⅱ: case studies for a synchronous thermal instability operating in overhung rotors [J ] . International Journal of Rotating Machinery , 2004 , 10 ( 6 ): 477 - 487 .

BALBAHADUR A C , KIRK R G . Part Ⅰ: theoretical model for a synchronous thermal instability operating in overhung rotors [J ] . International Journal of Rotating Machinery , 2004 , 10 ( 6 ): 469 - 475 .

TONG Xiaomeng , PALAZZOLO A . Measurement and prediction of the journal circumferential temperature distribution for the rotordynamic Morton effect [J ] . Journal of Tribology , 2018 , 140 ( 3 ): 031702 .

SHIN D , PALAZZOLO A . Tilting pad bearing pivot friction and design effects on thermal bow-induced rotor vibration [J ] . Journal of Tribology , 2021 , 143 ( 12 ): 121804 .

余承智 , 刘阳 , 袁奇 , 等 . 考虑轴颈同步涡动的转子-轴承系统热效应分析 [J ] . 西安交通大学学报 , 2025 , 59 ( 2 ): 95 - 105 .

YU Chengzhi , LIU Yang , YUAN Qi , et al . Thermal effect of rotor-bearing system considering synchronous whirling of journal [J ] . Journal of Xi'an Jiaotong University , 2025 , 59 ( 2 ): 95 - 105 .

SCHMIED J , POZIVIL J , WALCH J . Hot spots in turboexpander bearings: case history, stability analysis, measurements and operational experience [C ] // ASME Turbo Expo 2008: Power for Land, Sea, and Air . New York, USA : ASME , 2008 : 1267 - 1277 .

TONG Xiaomeng , PALAZZOLO A . Double overhung disk and parameter effect on rotordynamic synchronous instability Morton effect: part Ⅱ occurrence and prevention [J ] . Journal of Tribology , 2017 , 139 ( 1 ): 011706 .

TONG Xiaomeng , PALAZZOLO A . Double overhung disk and parameter effect on rotordynamic synchronous instability Morton effect: part Ⅰ theory and modeling approach [J ] . Journal of Tribology , 2017 , 139 ( 1 ): 011705 .

DE JONGH F M , VAN DER HOEVEN P . Application of a heat barrier sleeve to prevent synchronous rotor instability [C ] // Proceedings of the 27th turbomachinery symposium . College Station, Texas, USA : Texas A&M University Turbomachinery Laboratories , 1998 : 17 - 26 .

王正 . 转动机械的转子动力学设计 [M ] . 北京 : 清华大学出版社 , 2015 .

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Energy Efficiency Optimization of the Cryogenic Air Separation Process for Electronic-Grade Ultra Pure Nitrogen

Knowledge Graph Representation Learning Driven by Semantic Discrimination and Subgraph Integration

Numerical Simulation of the Energy Conversion Process in Thermoacoustic Engines with Different Stack Materials

Integrated and Joint Design Optimization of Centrifugal Compressor Impeller and Casing Treatment at Multiple Working Points

Sensitivity Analysis of Foil Geometrical Parameters for the Third-Generation CO2 Gas Foil Bearings Based on Design of Experiments Method

Related Author

No data

Related Institution

No data

⁰