【摘要】：徑向滑動軸承是各種機械裝置的主要運動部件之一，也是主要的摩擦副之一。目前進行的徑向滑動軸承潤滑性能研究中，一般都不考慮軸承組件的軸向運動。實際徑向滑動軸承工作時，由于受到外部載荷等的作用，軸頸會發(fā)生傾斜，同時還會產(chǎn)生軸向的運動。為了對徑向滑動軸承進行更加全面、接近實際情況的研究，精確預(yù)測徑向滑動軸承的潤滑性能，本文進行了考慮軸承組件軸向運動的靜載徑向滑動軸承潤滑性能研究。 （1）計及軸頸軸向運動和傾斜的徑向滑動軸承流體動力潤滑分析 考慮軸頸傾斜、軸頸軸向運動和形成的擠壓效應(yīng)，計算分析徑向滑動軸承的油膜壓力分布、最大油膜壓力、端泄流量、油膜反力和軸頸摩擦系數(shù)等。 （2）計及表面形貌和軸頸軸向運動的傾斜軸頸軸承流體動力潤滑分析 考慮軸頸傾斜、軸頸軸向運動和軸承組件的表面形貌，，計算分析徑向滑動軸承的油膜壓力分布、最大油膜壓力、端泄流量、油膜反力和軸頸摩擦系數(shù)等。 （3）計及表面形貌和軸頸軸向運動的傾斜軸頸軸承熱流體動力潤滑分析 考慮軸頸傾斜、軸頸軸向運動、軸承組件的表面形貌和潤滑油黏溫效應(yīng)，計算分析徑向滑動軸承的油膜壓力分布、最大油膜壓力、端泄流量、油膜反力和軸頸摩擦系數(shù)等。 研究結(jié)果表明，軸頸軸向運動對徑向滑動軸承的油膜壓力分布、最大油膜壓力、端泄流量、油膜反力和軸頸摩擦系數(shù)等潤滑性能都存在一定影響。 因此，徑向滑動軸承的流體動力潤滑分析中，非常有必要考慮軸承組件軸向運動的影響。
[Abstract]:Radial sliding bearing is one of the main moving parts of various mechanical devices and also one of the main friction pairs. The axial motion of bearing assembly is generally not considered in the present research on the lubrication performance of radial sliding bearing. When the actual radial sliding bearing is working, the journal will be inclined and the axial motion will occur because of the external load and so on. In order to study the lubrication performance of radial journal bearing more comprehensively, close to the actual situation and accurately predict the lubrication performance of radial sliding bearing, the lubrication performance of static load radial journal bearing considering the axial motion of bearing assembly is studied in this paper. (1) considering the axial motion of the journal and the hydrodynamic lubrication of the radial sliding bearing, considering the journal inclination, axial motion and extrusion effect, the oil film pressure distribution of the radial journal bearing is calculated and analyzed. Maximum oil film pressure, end discharge, oil film reaction and neck friction coefficient. (2) considering the surface morphology and axial motion of journal, the hydrodynamic lubrication analysis of tilted journal bearing, considering the inclination of journal, axial motion of journal and the surface morphology of bearing assembly, the oil film pressure distribution of radial sliding bearing is calculated and analyzed. Maximum oil film pressure, end discharge, oil film reaction and neck friction coefficient. (3) considering the surface morphology and axial motion of journal, the thermal hydrodynamic lubrication analysis of tilted journal bearing takes into account the inclination of journal, axial movement of journal, surface morphology of bearing assembly and viscosity temperature effect of lubricating oil. The oil film pressure distribution, the maximum oil film pressure, the end discharge rate, the oil film reaction force and the friction coefficient of the journal are calculated and analyzed. The results show that the axial movement of the journal has a certain influence on the lubrication performance of radial sliding bearing such as oil film pressure distribution, maximum oil film pressure, end discharge flow, oil film reaction force and journal friction coefficient. Therefore, in the hydrodynamic lubrication analysis of radial sliding bearings, it is necessary to consider the axial motion of bearing components.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TH133.3

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