The dynamic contact behavior of worn bearings with elastoplastic functionally graded coating is studied, and the interacting effect between worn band and functionally graded surface is analyzed. The surface deformation and roughness are included in the film thickness. The mixed elastohydrodynamic lubrication combined with point contact model is introduced to analyze the oil pressure in the contact zone. By using the Fourier transform method and Papkovich–Neuber potential function, the displacements and stress fields in the elastoplastic functionally graded coating are obtained. The second-order central difference method is used to solve the Reynolds equation. It is found that the repeated surface interaction can result in the sharp increase in pressure in bearings, and the oil pressure increases with increasing graded index. The entrainment of oil in the inlet and outlet zones becomes more evident if a large graded index is selected.

研究了带弹塑性功能梯度涂层的磨损轴承的动态接触行为，并分析了磨损带与功能梯度表面之间的相互作用。表面变形和粗糙度包括在膜厚度中。介绍了混合弹性流体动力润滑与点接触模型相结合的方法，以分析接触区域的油压。通过使用傅立叶变换方法和Papkovich-Neuber势函数，获得了弹塑性功能梯度涂层的位移和应力场。使用二阶中心差法求解雷诺方程。发现重复的表面相互作用可导致轴承压力急剧增加，并且油压随坡度指数的增加而增加。