Effects of micropolar fluids to the performance of parabolic slider bearings

• Main Authors: Gu,Shu-Cheng, 古戍成
• Other Authors: Chou,Tsu-Liang
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/05565253306256954993

碩士 === 桃園創新技術學院 === 機械工程系機械與機電工程碩士班 === 103 === The influences of micro-polar non-Newtonian lubricant and shape factor δ to the parabolic steady-state sliding bearing performances were investigated in this thesis. The properties of micro-polar fluid could be described with parameters of characteristic material length ι and dimensionless coupling parameter N. According to the studies, the shape factor δ has a great affect to the bearing pressure distribution, the larger the value of δ is, the greater offset to the bearing right end side of the pressure distribution and position of maximal pressure are. Besides, characteristic material length ι and dimensionless coupling parameter N can enhance both the bearing pressure rather than the pattern of the pressure distribution. Within the analytic values of δ, the maximal bearing loading capacity F*max occurred all at shape factor δ was 1.4; that is, δ＝1.4, the parabolic sliding bearing will have the optimal bearing performances. As about to position of the loading center, affected most by the shape factor δ. Whatever the value δ is, the position of the loading center will locate all at the right end side of journal bearing (X*c≧0.53); the larger the value δ is, the more offset of the loading center to the outlet zone of bearing.