This paper proposes a novel gas journal bearing in which orifices are different in diameter and distribute unevenly. Finite Difference Method (FDM) combined with Linear Perturbation Method (LPM) is used to solve the unsteady-state Reynolds equation of the flow field in the bearing clearance. Moreover, four types of bearing structures are used to discuss the effects of orifices different in diameter and uneven distribution on the bearing performance. The results demonstrate that the new bearing has better static and dynamic performances compared with those of traditional bearing in which orifices are equal in diameter and distribute evenly. Moreover, thin gas film thickness, high supply pressure, and large eccentricity ratio are hopeful for improving load capacity of the new bearing. Furthermore, the stability of the novel bearing is improved if eccentricity ratio is 0.25–0.3.

本文提出了一种新型气体轴颈轴承，其中孔口直径不同且分布不均匀。有限差分法（FDM）与线性微扰法（LPM）相结合，用于求解轴承间隙流场的非稳态雷诺方程。此外，还使用四种轴承结构来讨论孔径不同和分布不均对轴承性能的影响。结果表明，与孔口直径相等且分布均匀的传统轴承相比，新型轴承具有更好的静态和动态性能。此外，气膜厚度薄、供气压力高、偏心比大，有望提高新型轴承的承载能力。此外，