微極性流體對複合滑塊軸承之性能分析

PERFORMANCE ANALYSIS OF MICRO POLAR FLUIDS TO THE COMPOSITE SLIDER BEARING

江新祿(Shiu-Lu Chiang) ； 周祖亮(Chu-Liang Chou)

《南亞學報》 36期 (2016/12) Pp. 1-15

摘要

分析軸承性能，通常依軸承外型，分別以不同的油膜厚度函數h(x,t)定義之。油膜厚度h(x,t)包含三個參數a、b 及α，只要適當設定此參數，即可求得不同外型軸承的油膜厚度函數。將整合後之油膜厚度函數代入修正後廣義雷諾方程式，即可求得不同軸承外型之軸承性能。本研究以非牛頓微極性流體為潤滑液，分析並比較傾斜面、拋物線面、傾斜-平面和拋物線-平面等四種軸承外型之軸承性能。分析結果顯示，拋物線面軸承具有最佳之液動油膜負載F^*、剛性係數S_d^*及阻尼係數D_d^*。

關鍵字

軸承性能 ； 極性流體 ； 剛性係數

並列摘要

To analyze the bearing performance, in general, the functions h(x,t) of film thickness are defined based on the bearing profiles. Parameters of film thickness h(x,t) include a, b and α, and selecting these three parameters properly can we decide the functions describing the film thickness of different profiles of sliding bearings. When the functions of film thickness are integrated and substituted into the modified generalized Reynolds equation, we can obtain the performance analysis of sliding bearing with different profiles. In this study, non-Newtonian micropolar fluid is used as lubricant, and sliding bearing with inclined plane, parabolic-shaped, tapered-land and parabola-plane are researched and discussed. According to the results, the performances of sliding bearing with parabolic surface has the optimal dynamic film loading F^*, stiffness coefficient S_d^* and damping coefficient D_d^*

並列關鍵字

bearing performance ； micropolar fluid ； stiffness coefficient