This work presents the investigation results of a journal bearing lubricated with magnetorheological fluid that is activated by a local constant magnetic field to vary both the local flow resistance and pressure. The bearing performance is assessed via Finite Element Modelling (FEM) and results are corroborated by experiments. The FEM model uses the Bingham model to describe the fluid film. A dedicated test rig is used to assess the hydrodynamic behavior of the bearing with magnetorheological fluid, and the results are compared with the same geometrical bearing lubricated with oil. Thicker fluid films at low speeds, beneficial pressure distribution, and higher friction losses under all operating conditions are observed in the bearing with magnetorheological fluid compared to the oil lubrication.

这项工作展示了用磁流变流体润滑的轴颈轴承的研究结果，该流体由局部恒定磁场激活以改变局部流动阻力和压力。轴承性能通过有限元建模 (FEM) 进行评估，结果由实验证实。FEM 模型使用 Bingham 模型来描述流体膜。使用专用试验台评估磁流变流体轴承的流体动力学行为，并将结果与​​相同几何形状的油润滑轴承进行比较。与油润滑相比，在使用磁流变流体的轴承中观察到在低速下更厚的流体膜、有利的压力分布以及在所有操作条件下更高的摩擦损失。