Keywords: sliding contact, tribology, fluid-structure-interaction coupling, microstructured surface, elastohydrodynamic lubrication, UDF File.

The reduction of friction coefficient plays a great positive role in many technical fields. In the past decades of research, a fine surface-structuring is often used to reduce friction. Research has shown that the application of textures on the surface of the lubricated contacts will produce a higher film thickness and reduce the possibility of mixed lubrication. Micron size textures on the contact surface helps to reduce the friction coefficient. In the 21st century, with the improvement of computer capabilities, numerical simulation is entering the field of research of EHL (Elastohydrodynamic lubrication) problems in tribological contacts. In this work, the FSI (Fluid-structure-interaction) coupling method was used to numerically simulate EHL in ANSYS software. Through simulation analysis, it can be determined that due to the microstructure on the contact surface, the pressure at the entrance of the microstructure groove drops sharply, which will cause a suction effect at the entrance. Finally, the current knowledge and assumptions about the potential driving mechanism of surface micro-texture in tribology are summarized, and the future possibility of this work is proposed.

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