Effect of micro-textures on lubrication characteristics of spur gears under 3D line-contact EHL model

Zhao, Jiang; Li, Zhengminqing; Zhou, Hong; Zhu, Rupeng

doi:10.1108/ilt-11-2020-0423

Cited by 12 publications

(4 citation statements)

References 47 publications

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“…With the aim of improving contact pressure distribution several approaches have been investigated. Among them, we can find developments in material properties [21][22][23], on topology [24][25][26], on surface texture [27][28][29] and on shape [30][31][32][33][34][35]. These works are based on optimisation algorithms following either gradient-based or heuristic strategies.…”

Section: Declarations Of Interest: Nonementioning

confidence: 99%

Stress-adaptive design of 2D contact interfaces with uniform pressure: A bio-inspired approach

Hernandez-Aristizabal

Arroyave-Tobón

Garzón‐Alvarado

et al. 2023

International Journal of Solids and Structures

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Section: Declarations Of Interest: Nonementioning

confidence: 99%

Stress-adaptive design of 2D contact interfaces with uniform pressure: A bio-inspired approach

Hernandez-Aristizabal

Arroyave-Tobón

Garzón‐Alvarado

et al. 2023

International Journal of Solids and Structures

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“…Concerning gear maintenance and use, the main consideration is the friction and lubrication of gears, which requires enhancing the friction and lubrication performance of the gear surface to reduce vibration and noise. Therefore, many scholars have conducted extensive research on the friction and lubrication aspects of gear transmission with the aim of further optimizing lubrication methods and theories and reducing gear vibration and noise (Ghodrati et al , 2018; Höhn and Michaelis, 2004; Shahnazar et al , 2016; Zhao et al , 2021).…”

Section: Introductionmentioning

confidence: 99%

Experimental analysis of vibration and noise characteristics of helical gears with nano-lubricant additives

Xu,

Xiao,

Cheng

2024

ILT

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Purpose The purpose of this study is to investigate the effects of nanoadditive lubricants on the vibration and noise characteristics of helical gears compared with conventional lubricants. The experiment aims to analyze whether nanoadditive lubricants can effectively reduce gear vibration and noise under different speeds and loads. It also analyzes the sensitivity of the vibration reduction to load and speed changes. In addition, it compares the axial and radial vibration reduction effects. The goal is to explore the application of nanolubricants for vibration damping and noise reduction in gear transmissions. The results provide a basis for further research on nanolubricant effects under high-speed conditions. Design/methodology/approach Helical gears of 20CrMnTi were lubricated with conventional oil and nanoadditive oils. An open helical gearbox with spray lubrication was tested under different speeds (200–500 rpm) and loads (20–100 N·m). Gear noise was measured by a sound level meter. Axial and radial vibrations were detected using an M+P VibRunner system and fast Fourier transform analysis. Vibration spectrums under conventional and nanolubrication were compared. Gear tooth surfaces were observed after testing. The experiment aimed to analyze the noise and vibration reduction effects of nanoadditive lubricants on helical gears and the sensitivity to load and speed. Findings The key findings are that nanoadditive lubricants significantly reduce the axial and radial vibrations of helical gears under low-speed conditions compared with conventional lubricants, with a more pronounced effect on axial vibrations. The vibration reduction is more sensitive to rotational speed than load. At the same load and speed, nanolubrication reduces noise by 2%–5% versus conventional lubrication. Nanoparticles change the friction from sliding to rolling and compensate for meshing errors, leading to smoother vibrations. The nanolubricants alter the gear tooth surfaces and optimize the microtopography. The results provide a basis for exploring nanolubricant effects under high speeds. Originality/value The originality and value of this work is the experimental analysis of the effects of nanoadditive lubricants on the vibration and noise characteristics of hard tooth surface helical gears, which has rarely been studied before. The comparative results under different speeds and loads provide new insights into the vibration damping capabilities of nanolubricants in gear transmissions. The findings reveal the higher sensitivity to rotational speed versus load and the differences in axial and radial vibration reduction. The exploration of nanolubricant effects on gear tribological performance and surface interactions provides a valuable reference for further research, especially under higher speed conditions closer to real applications. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-07-2023-0220/

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“…The tribological performance of gear significantly affects the reliability and transmission efficiency of the final reduction drive. [1][2][3] The reducer usually works under high load, which results in a very thin film thickness between the gear teeth, and the film thickness is the same order of magnitude as the surface roughness. 4,5 Therefore, for most of the times, the gears will stay in a mixed lubrication condition.…”

Section: Introductionmentioning

confidence: 99%

Modeling and analysis of sliding wear based on fractal surface reconstruction in line contact mixed lubrication

Zhao

Sheng

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part J:

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In mixed lubrication, the direct rough contact between the two contact surfaces causes material wear and lead to the variation of the surface micro-topography. In turn, the variation of the micro-topography affects the lubrication state between the two contacting surfaces. For the better comprehension of the interaction of lubrication and wear on rough surfaces in mixed lubrication, in this paper, a coupled model of fluid flow, rough contact, and surface wear was established, with fractal theory being applied to predict the changes in surface microtopography. Furthermore, the effects of fractal dimension, roughness direction, contact load and slide-roll ratio on the surface contact area ratio, accumulated wear, film thickness and friction coefficient are analyzed. The results demonstrated that surfaces with large fractal dimension have denser roughness peaks, resulting in larger contact areas and more severe wear. Transverse roughness surfaces exhibit better lubrication and wear performance compared to longitudinal and isotropic surfaces. In addition, increasing the contact load and slip-roll ratio increases the contact area ratio, resulting in lower lubricating performance and increased wear.

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Effect of micro-textures on lubrication characteristics of spur gears under 3D line-contact EHL model

Cited by 12 publications

References 47 publications

Stress-adaptive design of 2D contact interfaces with uniform pressure: A bio-inspired approach

Stress-adaptive design of 2D contact interfaces with uniform pressure: A bio-inspired approach

Experimental analysis of vibration and noise characteristics of helical gears with nano-lubricant additives

Modeling and analysis of sliding wear based on fractal surface reconstruction in line contact mixed lubrication

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