TY - JOUR
T1 - Tailoring of the bearing stiffness to enhance the performance of gas-lubricated bump-type foil thrust bearing
AU - Gad, Abdelrasoul M.
AU - Kaneko, Shigehiko
N1 - Funding Information:
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was funded by the Japan Society for the Promotion of Science (JSPS), (grant no. 24.02361/ 2012).
Funding Information:
Mechanical Engineering at The University of Tokyo and supported by both The University of Tokyo and The JSPS. The authors would like to thank the JSPS for the kind support of this activity.
Publisher Copyright:
© IMechE 2015.
PY - 2016/5
Y1 - 2016/5
N2 - This study aims to tailor the bearing stiffness for enhancing the load-carrying capacity of foil thrust bearings. New architectures for the bump foil are introduced with structural stiffness tailored in the radial and circumferential directions to ensure a converging gas film under high axial loads while maintaining a reasonable bearing compliance to accommodate thermal as well as mechanical distortions. The structural stiffness of the bearing is calculated with an analytical method previously introduced by the authors, and the flow in the gas film is modeled with 2-D compressible Reynolds equation. The Couette Approximation technique is used to calculate the temperature distribution in the gas film and the small perturbations method is used to calculate its dynamic force coefficients. Enhanced load capacity could be obtained with the introduced bump foil designs.
AB - This study aims to tailor the bearing stiffness for enhancing the load-carrying capacity of foil thrust bearings. New architectures for the bump foil are introduced with structural stiffness tailored in the radial and circumferential directions to ensure a converging gas film under high axial loads while maintaining a reasonable bearing compliance to accommodate thermal as well as mechanical distortions. The structural stiffness of the bearing is calculated with an analytical method previously introduced by the authors, and the flow in the gas film is modeled with 2-D compressible Reynolds equation. The Couette Approximation technique is used to calculate the temperature distribution in the gas film and the small perturbations method is used to calculate its dynamic force coefficients. Enhanced load capacity could be obtained with the introduced bump foil designs.
KW - Foil thrust bearing
KW - bearing stiffness distribution
KW - hydrodynamic lubrication
KW - static and dynamic characteristics
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U2 - 10.1177/1350650115606482
DO - 10.1177/1350650115606482
M3 - Article
AN - SCOPUS:84965062458
SN - 1350-6501
VL - 230
SP - 541
EP - 560
JO - Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
JF - Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
IS - 5
ER -