Analysis of Line Contact Elastohydrodynamic Lubrication with the Particles under Rough Contact Surface

Chen, Keying; Zeng, Liangcai; Chen, Juan; Ding, Xianzhong

doi:10.1155/2020/5420426

Cited by 6 publications

(4 citation statements)

References 23 publications

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“…25, No. 1 (2024) Mattallah S, Kelaiaia R, Louahem M'Sabah H, Kerboua A: Application of artificial neural networks for… 2 topographies combined with the associated particle parameters on EHL performance and the minimum film thickness distribution under different loads, operating speeds and initial viscosities are also studied by [11]. In [12], the authors have addressed the combination of elastohydrodynamic lubrication (EHL) and the inclusion problem to consider the effect of material inhomogeneity on the lubrication performance and subsurface stress distribution.…”

Section: Introductionmentioning

confidence: 99%

Application of artificial neural networks for the prediction of the service conditions of an elastohydrodynamic EHL contact in the presence of solid pollutant

Mattallah,

Kelaiaia,

Louahem M'Sabah

et al. 2024

Diagnostyka

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Lubricated mechanical mechanisms operate under service conditions influenced by several environmental parameters, and their lifetimes may be threatened due to inappropriate use or by the presence of solid contaminants. The objective of this work is to study the effect of three operating parameters, namely: rotational speed 𝑉, load 𝑄 and kinematic viscosity 𝜈 in the presence of three sizes of solid contaminants 𝑇, on the degradation of an EHL contact, to predict the ranges of effects that may lead to the damage of the contacting surfaces. In our investigation, an experimental design of nine trials is used to combine four factors with three levels each to accomplish the experimental investigation. Artificial neural network regression and the desirability function were used for the interpretation and modelling of the responses, which are: wear 𝑊, arithmetic mean height 𝑅𝑎, total profile height 𝑅𝑡 and maximum profile height 𝑅𝑧. From these methods we observed that the sand grain sizes have a significant impact on the wear 𝑊 and the roughness 𝑅𝑎, but that viscosity has the primary influence on the variation of the roughnesses 𝑅𝑡 and 𝑅𝑧. We also found that the quality of the predicted models is very good, with overall determination coefficients of 𝑅 2 learning = 0.9985 and 𝑅 2 validation = 0.9996. Several levels of degradation depending on the operating conditions are predicted using the desirability function.

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Section: Introductionmentioning

confidence: 99%

Application of artificial neural networks for the prediction of the service conditions of an elastohydrodynamic EHL contact in the presence of solid pollutant

Mattallah,

Kelaiaia,

Louahem M'Sabah

et al. 2024

Diagnostyka

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“…Yin et al (2019) explored the coupling mechanism of cylinder liner surface roughness distribution and texture, concluding that the combination of surface texture and different surface roughness can improve lubrication performance. (Li and Yang, 2018;Chen et al, 2020;Abd Alsamieh, 2021, 2022 studied the elastic fluid dynamics of point and line contacts while considering roughness influence, determining that surface roughness alters pressure and film thickness.…”

Section: Introductionmentioning

confidence: 99%

Effect of composite textured rough surfaces on the lubrication performance of cylindrical roller bearings

Deng,

Su,

Jin

2024

ILT

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Purpose The purpose of this paper is to study the impact of different types of textures on the friction lubrication performance of cylindrical roller bearings. Design/methodology/approach In the present study, the composite texture hydrodynamic lubrication model that takes into account the effects of surface roughness is established, and the Reynolds equation for the oil film is numerically solved using the finite difference method. The study investigates the oil film carrying capacity and maximum pressure of bearings under two different arrangements of four composite textures and conducts a comparative analysis of the oil film characteristics under various texture parameters and surface roughness levels. Findings When the roughness of the inner texture surface and the contact surface are equal, the bearing capacity of the composite texture is intermediate between the two textures. The impact trend of surface roughness on fluid dynamic pressure effects varies with the type of composite texture; the internal roughness of the texture affects the micro-hydrodynamic pressure action. Composite textures with different depths exhibit improved bearing capacities; elliptical cylindrical parallel and elliptical hemispherical parallel textures perform better when their area densities are similar, while other types of composite textures show enhanced bearing performance as the ratio of their area densities increases. Originality/value This paper contributes to the theoretical investigations and analyses on designing the textured rolling bearings with high lubrication performance. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-02-2024-0050

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“…The first approach is the stochastic model, as shown by many researchers, such as Wang et al (2004) and Masjedi and Khonsari (2015). The second approach is the deterministic model [see, for example, Li and Jiajun (2018), Yang et al (2019), Al-Samieh (2019), Greenwood (2020) and Chen et al (2020)].…”

Section: Introductionmentioning

confidence: 99%

Ultrathin film formation under combined effect of surface roughness and surface force for elastohydrodynamic lubrication of point contact problems

Alsamieh

2022

ILT

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Purpose The purpose of this study is to investigate the combined effect of surface force, solvation and Van der Waals forces and surface topography parameters of amplitude and wavelength on the formation of ultrathin films for elastohydrodynamic lubrication of point contact problems. Design/methodology/approach The Newton–Raphson technique is used to simultaneously solve the Reynolds’ film thickness including surface roughness and elastic deformation, surface force of solvation and Van der Waals forces and load balance equations. Different values of surface amplitude and wavelength were simulated in addition to the load variation. Findings The simulation results revealed that roughness effects are important as the film thickness decreases. The oscillation in the pressure and film thickness is due to the combined action of the solvation force and surface topography parameters. The limiting values of the surface topography parameters of the amplitude and wavelength varied and depended on the load. For different values of wavelength and load, amplitude values up to 0.25 nm have no effect on ultrathin film formation. Originality/value The combined effect of the surface force and surface roughness on the formation of ultrathin films was evaluated for elastohydrodynamic lubrication of point contact problems under different operating conditions of load and surface topography parameters of amplitude and wavelength. The limited surface topography parameters of the amplitude and wavelength are shown and analyzed.

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Analysis of Line Contact Elastohydrodynamic Lubrication with the Particles under Rough Contact Surface

Cited by 6 publications

References 23 publications

Application of artificial neural networks for the prediction of the service conditions of an elastohydrodynamic EHL contact in the presence of solid pollutant

Application of artificial neural networks for the prediction of the service conditions of an elastohydrodynamic EHL contact in the presence of solid pollutant

Effect of composite textured rough surfaces on the lubrication performance of cylindrical roller bearings

Ultrathin film formation under combined effect of surface roughness and surface force for elastohydrodynamic lubrication of point contact problems

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