20511 液晶を潤滑剤とした流体潤滑特性の制御に関する研究(トライボロジーと機械要素(1),OS.11 トライボロジーと機械要素)

概要

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Journal bearing is also used for small bearing such as a hard disk drive unit; however it has problems that stiffness and friction torque change with changing temperature. In order to expand the application of journal bearing, development of journal bearing which can correspond to severe difference-of-temperature conditions. The journal bearing which can obtain high load capacity with low friction torque was devised by controlling the viscosity by the external electric field using liquid crystal as a lubricating fluid. The objective of this paper is to clarify the influence of applying voltage on journal center position, friction torque, and pressure distribution, and to indicate the design of LC journal bearing. The method of applying voltage partially using distributed electrodes was proposed for the purpose of increasing load capacity with suppressing the increase of friction torque. We clarified that the same load capacity can be obtained with friction torque reduced maximum of 45% compare with conventional bearings.
一般社団法人日本機械学会の論文
2007-03-15