著者

大津 健史 西田 一樹

出版者

一般社団法人 日本トライボロジー学会

雑誌

トライボロジスト (ISSN:09151168)

巻号頁・発行日

vol.61, no.2, pp.127-136, 2016-02-15 (Released:2016-05-23)

参考文献数

27

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This paper describes that the behavior of growth of cavitation formed in the journal bearing and the effect of cavity growth on the bearing performance. The journal bearing test apparatus in which the bearing was made of transparent acrylic plastic was used, and cavitation in lubrication film was observed by the fluorescent method in this study. Results show that the cavity is formed by the bubble occurred at the edge of bearing, and the angle of start and end position of cavity depends on applied weight. The cavity grows with time at a constant load of 45 N because the cavity coalesces with small cavities occurred at the edge of bearing, and the eccentricity ratio and the attitude angle are also changed during the time of growth. It is also shown by a numerical analysis that the cavity growth is related with the oil flow generated by the negative pressure at the outlet of the cavity.