The plasto‐elastohydrodynamic lubrication (PEHL) model of the greased ellipsoid contact is established and solved numerically. In doing so, the increment theory of the plastic surface is adopted to solve the residual deformation, and the fast Fourier transform (FFT) method is employed to accelerate the deformation and stress calculations. Meanwhile, the effeteness of the PEHL model is verified through the residual stress experiment and finite element method. It is found that the plastic behaviour results in a reduction in the maximum grease film pressure. Under heavy load conditions, the grease with large rheology index, large tangential modulus or high entrainment speed of the lubricant is helpful to reducing the maximum residual deformation and maximum residual stress of the greased ellipsoid contact.

中文翻译：

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脂类椭球接触件的质弹弹性流体动力润滑性能

建立了脂类椭圆体接触的塑性-弹性流体动力润滑（PEHL）模型，并对其进行了数值求解。为此，采用塑性表面的增量理论来解决残余变形，并使用快速傅里叶变换（FFT）方法来加速变形和应力计算。同时，通过残余应力实验和有限元方法验证了PEHL模型的有效性。发现塑性行为导致最大脂膜压力降低。在重载条件下，具有大的流变指数，大的切向模量或高的夹带速度的润滑脂有助于减少润滑脂椭球接触的最大残余变形和最大残余应力。