Meso scale air journal bearing has widespread application in miniaturized systems and there is a strong need to improve its tribological performance. Although surface texturing can improve its performance, very few studies have addressed this issue. Therefore, this paper investigates the influence of texture geometrical parameters on the tribological performance of meso scale air journal bearing. A numerical study is carried out in a thin-film model of the COMSOL 5.2 package. The effect of texture geometrical parameters viz. position, depth, orientation, and slender ratio on tribological characteristics such as load-carrying capacity and friction coefficient is first analyzed by response surface methodology based Box-Behnken design. Further, a multi-objective optimization study is carried out using grey relational analysis. For the optimum design, textured air bearing has obtained 12.15% more load carrying capacity, and 19.65% lesser friction coefficient than the plane air bearing. For this improvement, texture depth and orientation are found to be the most and the least significant parameters, respectively. Also, at variable bearing parameters such as eccentricity ratio and rotational speed the optimum textured bearing performed better than the regularly textured bearings.

中尺度空气轴颈轴承在小型化系统中具有广泛的应用，并且迫切需要提高其摩擦学性能。尽管表面纹理可以提高其性能，但很少有研究解决这个问题。因此，本文研究了织构几何参数对中尺度空气轴颈轴承摩擦学性能的影响。在 COMSOL 5.2 软件包的薄膜模型中进行数值研究。纹理几何参数的影响即。首先通过基于 Box-Behnken 设计的响应面方法分析位置、深度、方向和长细比对承载能力和摩擦系数等摩擦学特性的影响。此外，使用灰色关联分析进行多目标优化研究。为了优化设计，与平面空气轴承相比，纹理空气轴承的承载能力提高了 12.15%，摩擦系数降低了 19.65%。对于这种改进，发现纹理深度和方向分别是最重要和最不重要的参数。此外，在偏心比和转速等可变轴承参数下，最佳纹理轴承的性能优于规则纹理轴承。