Dynamic behavior of hydrostatic squeeze film dampers fed through four capillary restrictors with micropolar lubricant
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 28 November 2023
Issue publication date: 16 January 2024
Abstract
Purpose
The purpose of this research is to study the dynamic behavior of hydrostatic squeeze film dampers made of four hydrostatic pads, fed through four capillary restrictors with micropolar lubricant.
Design/methodology/approach
The modified version of Reynolds equation is solved numerically by the finite differences and the Gauss–Seidel methods to determine the pressure field generated on the hydrostatic bearing flat pads. In the first step, the effects of the pad dimension ratios on the stiffness and damping coefficients are investigated. In the second step, the damping factor is evaluated with respect to the micropolar properties.
Findings
The analysis revealed that the hydrostatic squeeze film dampers lubricated with micropolar lubricants produces the maximum damping factor for characteristic length of micropolar lubricant less than 5, while the same bearing operating with Newtonian lubricants reaches its maximum damping factor at eccentricity ratios larger than 0.4.
Originality/value
The results obtained show that the effects of micropolar lubricants on the dynamic performances are predominantly affected by the pad geometry and eccentricity ratio.
Keywords
Citation
Benariba, A., Bouzidane, A., Aboshighiba, H. and Thomas, M. (2024), "Dynamic behavior of hydrostatic squeeze film dampers fed through four capillary restrictors with micropolar lubricant", Industrial Lubrication and Tribology, Vol. 76 No. 1, pp. 22-28. https://doi.org/10.1108/ILT-07-2023-0207
Publisher
:Emerald Publishing Limited
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