<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The current study is a semi-analytical analysis of the vibratory behaviour of a rigid vertical rotor, supported by a new hydrostatic squeeze film damper (HSFD), consisting of four hydrostatic pads fed through four single-action membrane-type variable-flow restrictors. The Reynolds equation based on the Newtonian theory of lubrication is used and then adapted to our work, which is solved semi-analytically. In this paper, we study the effect of different parameters, the eccentricity, membrane geometry coefficient, pressure ratio and rotational speed, on the main characteristics of a four-pad HSFD. From the simulation results, we observed that at the critical speed, the rigid rotor fed by membrane restrictor shows a decrease in transmitted forces, a decrease in vibration response and good system stability as compared with a similar rotor fed by capillary restrictor. From the results reported in this work, we observed good agreement between our study and other works.</p>
</abstract>

The current study is a semi-analytical analysis of the vibratory behaviour of a rigid vertical rotor, supported by a new hydrostatic squeeze film damper (HSFD), consisting of four hydrostatic pads fed through four single-action membrane-type variable-flow restrictors. The Reynolds equation based on the Newtonian theory of lubrication is used and then adapted to our work, which is solved semi-analytically. In this paper, we study the effect of different parameters, the eccentricity, membrane geometry coefficient, pressure ratio and rotational speed, on the main characteristics of a four-pad HSFD. From the simulation results, we observed that at the critical speed, the rigid rotor fed by membrane restrictor shows a decrease in transmitted forces, a decrease in vibration response and good system stability as compared with a similar rotor fed by capillary restrictor. From the results reported in this work, we observed good agreement between our study and other works.

Semi-Analytical Analysis of a Rigid Rotor Mounted on Four-Pad Hydrostatic Squeeze Film Damper with Single-Action Membrane-Type Restrictors

Research Laboratory of Industrial Technologies

Ibn Khaldun’s University of Tiaret, BP 78 City

Acta Mechanica et Automatica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

The current study is a semi-analytical analysis of the vibratory behaviour of a rigid vertical rotor, supported by a new hydrostatic squeeze film damper...

Semi-Analytical Analysis of a Rigid Rotor Mounted on Four-Pad Hydrostatic Squeeze Film Damper with Single-Action Membrane-Type Restrictors

Published Online: Dec 30, 2023

Page range: 507 - 514

Received: Apr 07, 2023

Accepted: May 10, 2023

DOI: https://doi.org/10.2478/ama-2023-0059

Keywords
linear vibration, unbalance, hydrostatic squeeze film damper, Reynolds equation, Newtonian fluids, membrane restrictor, squeeze film lubrication

© 2023 Ahmed Kechra et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Semi-Analytical Analysis of a Rigid Rotor Mounted on Four-Pad Hydrostatic Squeeze Film Damper with Single-Action Membrane-Type Restrictors

Published Online: Dec 30, 2023

Page range: 507 - 514

Received: Apr 07, 2023

Accepted: May 10, 2023

DOI: https://doi.org/10.2478/ama-2023-0059

Keywordslinear vibration, unbalance, hydrostatic squeeze film damper, Reynolds equation, Newtonian fluids, membrane restrictor, squeeze film lubrication

© 2023 Ahmed Kechra et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
linear vibration, unbalance, hydrostatic squeeze film damper, Reynolds equation, Newtonian fluids, membrane restrictor, squeeze film lubrication