Numerical Simulation of Sliding Wear in Finite Line Contact Mixed Lubrication
Tóm tắt
With finite line contact mixed elastohydrodynamic lubrication, rough contact can occur between the two contact surfaces, which can result in material wear. Variation in the surface morphology that are caused by wear also alter the local lubrication state between the contact surfaces, and the prediction of this coupling relationship can be difficult. For this study, a numerical simulation model was constructed for the evolution of surface tribological parameters under sliding wear based on the deterministic finite line contact lubrication model and the Archard’s wear model. Variations in contact area ratio, coefficient of friction, accumulated wear, and other parameters were analyzed, and the effect of the rough surface wavelength ratio and roughness amplitude on the wear characteristics are discussed. The results of the research demonstrate that it is possible to predict lubrication and wear characteristics of multiple contact types. Considering the effect of rough surface morphology, reducing the wavelength ratio and increasing the roughness range can aggravate the wear of the rough surface.
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