Hysteresis Phenomenon of Hydrodynamic Lubrication Characteristics of Seal-Type Dimple Bearings

Abstract:

This study involved an experimental investigation of the hydrodynamic lubrication performance of dimpled seal-like thrust bearings. Circular dimples were created on lubricating surfaces and the hydrodynamic effects were evaluated. The load-carrying capacity and frictional torque were measured under a constant film thickness. The lubricating surface was observed to make clear the effect of the cavitation area on the load-carrying capacity and the frictional torque. Dimpled specimen produced the load-carrying capacity and it showed a signature hysteresis phenomenon. Cavitation strongly affected the phenomenon. In addition, the dimpled specimen could reduce the frictional torque compared with the plane (dimple-free) specimen. However, the hysteresis phenomenon of the frictional torque was not clear compared with that of the load-carrying capacity.

• Periodical: Advances in Science and Technology (Volume 111)
• Pages: 7-11
• DOI: https://doi.org/10.4028/www.scientific.net/AST.111.7
• Online since: November 2021
• Authors: Reo Miwa, Norifumi Miyanaga*, Jun Tomioka
• Keywords: Dimple Bearings, Friction, Hydrodynamic Lubrication, Hysteresis, Load-Carrying Capacity

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