滑り軸受油膜の負圧に関する研究 (第3報,負圧の発生が軸受けの静特性に及ぼす影響)

概要

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Taking into account the surface dilatational viscosity, influences of development of negative pressure including tensile stress on the static characteristics are studied for the oil film of journal bearing : When negative pressure develops in the oil film, the maximum oil film pressure remains almost unchanged. However, when negative pressure develops, the mean oil film pressure increases to some extent under light load, but decreases under heavy load, and the coefficient of friction decreases under light load, but increases under heavy load. When negative pressure develops, the semicircle-like orbit curve of the journal center under static load deforms perpendicularly to the load direction and towards the bearing outside. When negative pressure develops, the side flow rate can decrease by the amount of back flow caused by the negative pressure in the oil film. These results indicate that the state of operation of journal bearing can shift towards more dangerous range, when the negative pressure develops in the oil film.
一般社団法人日本機械学会の論文
2001-03-25