マリンエンジニアリング
Online ISSN : 1884-3778
Print ISSN : 1346-1427
ISSN-L : 1346-1427
論文
製作誤差により四円弧軸受の下部にあるすべり面が傾いた場合の軸受の力学的静特性
藤野 俊和岩本 勝美地引 達弘阿部 雅二朗
著者情報
ジャーナル フリー

2019 年 54 巻 1 号 p. 103-110

詳細
抄録

When a manufacture error occurs, there may be a possibility of the actual size of a hydrodynamic journal bearing differing from its basic dimension. In this case, the characteristics of the hydrodynamic journal bearing can also be different from what have been expected, due to changes in oil film pressure distribution between the bearing and journal. The purpose of this study is to elucidate effects of manufacturing errors on the static characteristics of multi-lobe hydrodynamic journal bearings, whose structures are relatively simple and whose oscillation stability in the rotor shaft-bearing system is relatively strong. The study is also intended to come up with a proposal for guidelines about the optimized design for multi-lobe hydrodynamic journal bearings. This paper analyzed and examined changes in the static characteristics of a four-lobe hydrodynamic journal bearing, such as oil film pressure distribution, journal center locus, minimum oil film thickness and friction coefficient between the bearing and journal, when the position of the bottom lobe at the sliding surface is tilted from where it should be due to manufacturing errors. The results of the study showed that when the bottom lobe is tilted against the eccentric direction of the journal from the original location due to manufacturing errors, minimum oil film thickness may increase in comparison with the situation in which the lobe stays at the original location. The results also showed that friction coefficient between the journal and bearing does not change significantly in spite of manufacturing errors.

著者関連情報
© 2019 公益社団法人 日本マリンエンジニアリング学会
前の記事 次の記事
feedback
Top