Vibration isolating properties of uncentralized squeeze-film damper bearings supporting a flexible rotor

Cookson, R A; Kossa, S S

Title: Vibration isolating properties of uncentralized squeeze-film damper bearings supporting a flexible rotor

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Abstract

An analytic approach to the study of uncentralized squeeze-film damper bearings in terms of nondimensional system parameters is presented. A theoretical analysis and experimental results demonstrate the ability of the bearing to reduce vibration amplitude and transmitted force produced by simple unbalance in the rotor or nearness to a critical speed. Four simultaneous nonlinear differential equations are developed to reach a steady state solution from a nondimensional form of the equations of motion. Predictions are made and compared with results from tests with a flexible rotor using various journals and outer squeeze-film rings during rotational speeds up to 17,000 rpm. Results are diagrammed and photographs of the orbits are presented. The close match between the predicted orbits of the disk and journal centers with the experimental data indicates that the theoretical method employed yields an accurate description of the true situation.

Authors:

Cookson, R A ^[1]; Kossa, S S ^[2]

Cranfield Institute of Technology, Cranfield, Beds., England
Military Technical College, Cairo, Egypt

Publication Date:: Thu Oct 01 00:00:00 EDT 1981

OSTI Identifier:: 5600489

Report Number(s):: CONF-810309-
Journal ID: CODEN: JEPOA

Resource Type:: Conference

Journal Name:: J. Eng. Power; (United States)

Additional Journal Information:: Journal Volume: 103; Conference: ASME gas turbine conference, Houston, TX, USA, 9 Mar 1981

Country of Publication:: United States

Language:: English

Subject:: 20 FOSSIL-FUELED POWER PLANTS; GAS TURBINE ENGINES; ROLLER BEARINGS; MECHANICAL VIBRATIONS; DAMPING; FILMS; JOURNAL BEARINGS; ROTORS; BEARINGS; ENGINES; HEAT ENGINES; INTERNAL COMBUSTION ENGINES; 200104* - Fossil-Fueled Power Plants- Components

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                    Cookson, R A, and Kossa, S S. Vibration isolating properties of uncentralized squeeze-film damper bearings supporting a flexible rotor.  United States: N. p., 1981. 
        Web.

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                    Cookson, R A, & Kossa, S S. Vibration isolating properties of uncentralized squeeze-film damper bearings supporting a flexible rotor.  United States.

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                    Cookson, R A, and Kossa, S S. 1981.  
        "Vibration isolating properties of uncentralized squeeze-film damper bearings supporting a flexible rotor".  United States.

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@article{osti_5600489,

  title        = {Vibration isolating properties of uncentralized squeeze-film damper bearings supporting a flexible rotor},

  author       = {Cookson, R A and Kossa, S S},

  abstractNote = {An analytic approach to the study of uncentralized squeeze-film damper bearings in terms of nondimensional system parameters is presented. A theoretical analysis and experimental results demonstrate the ability of the bearing to reduce vibration amplitude and transmitted force produced by simple unbalance in the rotor or nearness to a critical speed. Four simultaneous nonlinear differential equations are developed to reach a steady state solution from a nondimensional form of the equations of motion. Predictions are made and compared with results from tests with a flexible rotor using various journals and outer squeeze-film rings during rotational speeds up to 17,000 rpm. Results are diagrammed and photographs of the orbits are presented. The close match between the predicted orbits of the disk and journal centers with the experimental data indicates that the theoretical method employed yields an accurate description of the true situation.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/5600489},
  journal      = {J. Eng. Power; (United States)},
number       = ,

  volume       = 103,

  place        = {United States},

  year         = {Thu Oct 01 00:00:00 EDT 1981},

  month        = {Thu Oct 01 00:00:00 EDT 1981}

}

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