To improve the performance of a hydrostatic bearing, a method of constructing micro-textures on the inner surface of a bearing is proposed to increase the bearing capacity and reduce the friction coefficient. In this paper, the composite texture is innovatively proposed, and the theoretical models of hydrostatic radial bearings under four situations including non-texture, square, spherical, and composite textures are established. The effect of texture shapes and texture parameters on bearing performance is numerically studied and the influence level of various factors on bearing performance is evaluated innovatively using the cross-correlation analysis. The results show that the presence of a micro-texture can improve the bearing capacity and reduce the friction coefficient of the bearing compared with smooth surface bearings; the composite micro-texture increases the bearing capacity by about 9.5%, the stiffness increases by about 8.2%, and the friction coefficient is reduced by about 10.5%; there is an optimal micro-texture unit area ratio (between 30% and 40%) making the bearing capacity largest and the friction coefficient smallest; finally, the influence level of various factors on the bearing performance is evaluated. The relative depth of the texture has the greatest influence on it, followed by the number of textures, and finally the unit area ratio. The above results will provide a theoretical basis for the design of hydrostatic bearings with micro-textures.

为了改善静压轴承的性能，提出了一种在轴承的内表面上构造微观纹理的方法，以增加轴承的承载能力并减小摩擦系数。本文创新地提出了复合纹理，建立了非纹理，正方形，球形和复合纹理四种情况下的静压径向轴承的理论模型。数值研究了纹理形状和纹理参数对轴承性能的影响，并使用互相关分析创新性地评估了各种因素对轴承性能的影响程度。结果表明，与光滑表面轴承相比，微观纹理的存在可以提高轴承的承载能力并降低轴承的摩擦系数。复合微纹理使承载能力提高了约9.5％，刚度提高了约8.2％，摩擦系数降低了约10.5％。有一个最佳的微织构单位面积比（在30％到40％之间），使承载能力最大，摩擦系数最小。最后，评估了各种因素对轴承性能的影响程度。纹理的相对深度对其影响最大，其次是纹理的数量，最后是单位面积比。以上结果将为微结构静压轴承的设计提供理论依据。有一个最佳的微织构单位面积比（在30％到40％之间），使承载能力最大，摩擦系数最小。最后，评估了各种因素对轴承性能的影响程度。纹理的相对深度对其影响最大，其次是纹理的数量，最后是单位面积比。以上结果将为微结构静压轴承的设计提供理论依据。有一个最佳的微织构单位面积比（在30％到40％之间），使承载能力最大，摩擦系数最小。最后，评估了各种因素对轴承性能的影响程度。纹理的相对深度对其影响最大，其次是纹理的数量，最后是单位面积比。以上结果将为微结构静压轴承的设计提供理论依据。