Influence of surface topography on the friction and dynamic characteristics of spur gears

Li, Zhi; Wang, Jianmei; Zhang, Hong; Chen, Jian; Liu, Kun

doi:10.1177/1350650119897471

Cited by 8 publications

(3 citation statements)

References 33 publications

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“…The functional group of parameters related to the material ratio curve affects wear and friction [23]. For example, Vmc (Core material volume) is the most relevant parameter to characterize the rolling process [38], or Vvv and Vvc (Core void volume) parameters are related to valleys of the surface, which reflect lubricant storage performance [23,42]. Moreover, Vvv and Vvc correlated with the friction coefficient of a rough contact interface [29].…”

Section: Surface Texture Measurementsmentioning

confidence: 99%

Tribological and Mechanical Properties of the Nanostructured Superlattice Coatings with Respect to Surface Texture

et al. 2022

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Ceramic Nanostructured Superlattice Coatings (NSC) have broad applicability to improve the parts’ and assemblies’ tribological and mechanical properties for the needs of the automotive and aerospace industries. Improving the material properties using nanocoatings for such a widely used material as, for example, bearing steel 100Cr6 makes it possible to improve the service life of machine parts. In this paper, the correlation dependence between tribological and mechanical properties of the NSC and its surface texture are considered to determine how much surface texture will affect the tribological performance of the coated workpieces, as well as the measuring and evaluation procedure of the nanocoatings, are presented. Three different NSC described by a general empirical formula {TiMe1Me2-CN/TiAlSi-N}n and based on the modified carbonitride/nitride non-stoichiometric chemical composition were created, and their tribological and mechanical properties measured and analyzed in the context with surface texture. NSC deposited by the advanced PVD (Physical vapor deposition) technique demonstrated significantly higher wear resistance (up to 28 times), reasonably lower friction coefficient (CoF) (up to 4 times), and significantly higher hardness of the coated workpieces (up to 7 times) versus substrate material. A strong correlation between the steady-state dry sliding friction, CoF, and the amplitude and functional surface texture parameters of tribo-track were observed. The first results of the initiated research regarding the correlation analysis of the tribological and mechanical properties, on the one hand, and surface texture, on the other hand, of the NSC are reported here.

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Section: Surface Texture Measurementsmentioning

confidence: 99%

Tribological and Mechanical Properties of the Nanostructured Superlattice Coatings with Respect to Surface Texture

et al. 2022

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“…Cao et al [30,31] established a tribo-dynamics model of bevel gears based on the theory of mixed elastohydrodynamic lubrication and analyzed the effects of tribology properties on gear dynamics and contact fatigue by solving the lubrication characteristics of bevel gears. Recent studies [32,33] have investigated the influence of asperity distribution and other micro-surface topography on gear dynamics. Some new research [34][35][36] on surface texture and tribodynamics of journal bearings provides new ideas for subsequent work, in which we can delve into the discussion about the impact of surface texture during the analysis of gear tribo-dynamics.…”

Section: Introductionmentioning

confidence: 99%

Study on the Dynamic Characteristics of Gears Considering Surface Topography in a Mixed Lubrication State

Cheng,

Ma,

et al. 2023

Lubricants

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Based on mixed lubrication analysis, considering the influence of rough interface contact stiffness, contact damping, and interface friction on the gear transmission system, the relationship between interface contact and the overall performance of the gear transmission system has been established. First, the surface topography is characterized using statistical parameters of rough surfaces, and the contact stiffness and damping for tooth surfaces with different roughnesses are calculated. Subsequently, a six degree of freedom gear tribo-dynamics coupling model is developed. Finally, the established tribo-dynamics model is employed to investigate the relationship between surface roughness and the overall performance of the gear transmission system. This study provides a more intimate connection between the contact interface and the general behavior of the gear transmission system, enabling a better representation of real-world engineering problems. The research findings reveal that contact stiffness and damping decrease with increasing surface roughness. Higher roughness leads to greater gear vibration amplitude. Moreover, elevated surface roughness results in intensified meshing force and more significant energy loss. Surprisingly, when the roughness is appropriate, gears with rough surfaces lose less energy than those with smooth surfaces.

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“…Although the gear lubrication conditions could be improved by selecting the roughness direction and amplitude, it will make the processing complicated and high economic cost. The application of surface texturing technology, especially laser surface texturing (LST) in the field of friction and lubrication with its advantages of high efficiency and good manufacturability is gradually enhanced (Gachot et al, 2017;Holmberg and Erdemir, 2017;Li et al, 2020;Zhang et al, 2019). Surface texturing technology can reduce the friction and wear of materials and improve the mechanical properties of the base material, which is beneficial to improve the fatigue life of gears (Greco et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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

Zhao

Zhou

et al. 2021

ILT

Self Cite

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Purpose The purpose of this paper is to use a combination of numerical simulation and experiment to evaluate the performance of laser surface texturing (LST) in the field of gear lubrication, and to more accurately predict the lubrication characteristics of different surfaces. Design/methodology/approach The method used in this paper is developed on the basis of the deterministic solution of the three-dimensional (3D) mixed elasto-hydrodynamic lubrication (EHL) model and the model parameters are corrected by friction test. The film pressure, film thickness and friction coefficient of different micro-textured tooth surfaces are predicted on the basis of accurate 3D mixed EHL models. Findings The results demonstrate that the micro-texture structure of the tooth surface can increase the local film thickness and enhance the lubricating performance of the tooth surface without drastically reducing the contact fatigue life. The stress distribution and friction characteristics of the tooth surface can be optimized by adjusting the micro-texture arrangement and the size of the micro-textures. Originality/value A new evaluation method using a 3D hybrid EHL model and friction test to predict the lubrication characteristics of LST is proposed, which can effectively improve the processing economy and save time. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-11-2020-0423

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Influence of surface topography on the friction and dynamic characteristics of spur gears

Cited by 8 publications

References 33 publications

Tribological and Mechanical Properties of the Nanostructured Superlattice Coatings with Respect to Surface Texture

Tribological and Mechanical Properties of the Nanostructured Superlattice Coatings with Respect to Surface Texture

Study on the Dynamic Characteristics of Gears Considering Surface Topography in a Mixed Lubrication State

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

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