Tribological Properties of V-Shaped Surface Texture under Oil Lubrication Condition

Abstract

In order to study the tribological properties of V-shaped texture under oil lubrication conditions, the loading force and speed are selected as the influencing factors, each factor selected six levels. Experimental study on friction and wear of V-shaped texture with ring arrangement is finished by MMG-10 Multifunctional Friction and Wear Testing Machine, and the data of the experimental results are analyzed by using Matlab. The results show that there is a near linear relationship between the friction coefficient and the loading force and velocity. The relationship between the friction coefficient and the loading force and velocity can be expressed by a functional equation. The loading force has a greater influence on the friction coefficient than the speed. The SEM images of the post-test specimens show that the main weared zone of the V-shaped texture is the tip part. Create a single V-shaped texture model with Solidworks and use CFD to divide the mesh into the Fluent solution. According to the pressure distribution cloud diagram and the turbulence intensity cloud diagram, the stability of the oil film is improved due to the enhanced fluidity of the oil film and the small change in the oil pressure. The tip portion is also the region with a large turbulence intensity value. The improvement of the stability of the oil film is the key to reduce the friction coefficient of the V-shaped texture when the loading force increases.

Research progress of surface texturing to improve the tribological properties: A review

“…Because the texture shape has a great influence on the tribological properties of the texture, many researchers are committed to improving the tribological properties of the surface texture by improving the texture shape. Wu et al 101 carried out tribological tests and simulation analysis on the surface of V-shaped texture under oil lubrication. It was found that the friction coefficient decreased with the increase of load and speed, and basically showed a linear relationship, and the load had a great influence.…”

Friction and wear performances of 7075 aluminum alloy surface with V-shaped microtexture via numerical simulation and experimental characterizations

“…The results showed that the friction coefficient on the carbide surface was minimized at a microtexture density of 9.5%. Via certain studies, it was concluded that V-shaped microtextures with a single orientation have better wear reduction effects than the traditional circular, square and grooved microtextures due to their unique convergent wedge (Hamilton et al , 1967; Wu et al , 2019). Despite the clear advantages of V-shaped microtextures, there remains a noticeable lack of systematic and comprehensive research on the underlying antiwear theory, friction and wear performance and the mechanisms involved (Marian et al , 2022).…”

Friction-Wear and Noise Characteristics of Friction Disks with Circular Texture

“…Recent studies indicate that textured surfaces with non-smooth morphology exhibit excellent performance in noise reduction and wear resistance [9,10]. To optimize the texture structure, numerous experimental studies have been carried out on textured surfaces with varying parameters, such as texture shape and size [11,12]. Zhang et al investigated the frictional wear of grooved textures under sand-containing oil lubrication conditions.…”