A numerical method was developed to study the effects of the micropolar (MP) lubricants at pure squeeze action in an isothermal elastohydrodynamic lubrication point contact with surface roughness under constant load condition, but without asperities contact. The modified transient stochastic Reynolds equation was derived in polar coordinates by means of the Christensen’s stochastic theory and the Eringen’s MP fluid theory. The Gauss–Seidel method and the finite difference method were both used to solve simultaneously the modified transient stochastic Reynolds, the load balance, the lubricant rheology and the elasticity deformation equations. The simulation results revealed that the effect of the MP lubricant was equivalent to enhancing the lubricant viscosity. Therefore, the central pressure and film thickness for MP lubricants were larger than those of Newtonian fluids under the same load in the elastic deformation stage. The maximum central pressure of the radial type roughness (RN) was greater than that of the circular type RN. The film thickness of the radial type RN was smaller than that of the circular type RN.

开发了一种数值方法，以研究在恒定负载条件下但表面粗糙但无凹凸接触的等温弹性流体动力润滑点接触中，微极性（MP）润滑剂在纯挤压作用下的作用。借助克里斯滕森的随机理论和艾林根的MP流体理论，在极坐标中推导了修正的瞬态随机雷诺方程。Gauss-Seidel方法和有限差分方法都用于同时求解改进的瞬态随机雷诺数，载荷平衡，润滑剂流变学和弹性变形方程。仿真结果表明，MP润滑剂的效果等同于提高润滑剂粘度。因此，在相同的载荷下，弹性变形阶段，MP润滑剂的中心压力和膜厚均大于牛顿流体。径向粗糙度（RN）的最大中心压力大于圆形RN。径向型RN的膜厚度小于圆形型RN的膜厚度。