Usually, rotor dynamic analyses do not consider the effects of the lubricant supply condition, although this is an important aspect of journal bearing performance. Therefore, this work has implemented a mass-conserving model to realistically describe the oil feeding condition and evaluate its influence on rotor dynamics. This analysis was carried out by varying feeding pressure and groove position and the results indicate that the oil supply conditions significantly influence the bearing performance and affect the dynamic behavior of the entire rotor. In general, lower flow rates lead to a bearing with a greater stability region, as observed mainly in the bearing with a groove at 270° and, on the other hand, the increase in feeding pressure reduces the instability threshold.

通常，转子动力学分析不考虑润滑剂供应条件的影响，尽管这是轴颈轴承性能的重要方面。因此，这项工作实现了一个质量守恒模型，以真实地描述供油条件并评估其对转子动力学的影响。该分析是通过改变进给压力和凹槽位置进行的，结果表明供油条件显着影响轴承性能并影响整个转子的动态性能。通常，较低的流速会导致轴承具有较大的稳定性区域，这主要是在带有270°凹槽的轴承中观察到的，另一方面，进料压力的增加会降低不稳定性阈值。