Analysis of Modified Finite Length Journal Bearing under Position Perturbation

The performance of journal bearings is significantly affected by the presence misalignment, which usually an accompanying problem for this type bearing. This includes exceeding design limits maximum pressure and minimum film thickness levels, affect, in other words, load-carrying capacity system. In addition, it raises possibility increasing wear rate at bearing edges increases friction coefficient high levels misalignment. paper deals with finite-length misaligned bearings, considering a novel comparison between two cases misalignments: general 3D misalignment vertical problems modified bearings. effect introducing variable axial profile on characteristics time responses rotor system under position perturbation has also been investigated. numerical solution hydrodynamic based finite difference method using Reynolds boundary conditions method. Results show that improves characteristics, such as reducing addition to coefficient. Furthermore, modification enhances rotor-bearing stability perturbation, extending speed range safe operation.