Unloading contact mechanics analysis of elastic–plastic fractal surface

Pan, Wujiu; Song, Changxuan; Ling, Liangyu; Qu, Haoyong; Wang, Ming-Hai

doi:10.1007/s00419-021-01918-0

Cited by 14 publications

(7 citation statements)

References 23 publications

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“…However, because the actual asperities of rough surfaces are 3D, it is impractical to use 2D fractal theory to represent the 3D asperity. The 3D fractal theory can describe the 3D asperity of rough surfaces and is widely used (Pan et al , 2021). Based on the 3D fractal theory, Li et al (2021) first presented a novel TCR model for liquid–solid interfaces and studied the influences of the TCR between the composite phase change material and the heat source.…”

Section: Introductionmentioning

confidence: 99%

Fractal model of thermal contact conductance of the involute arc cylindrical gear considering friction coefficient

Sun,

Xin

2024

COMPEL

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Purpose The purpose of this study is to propose a fractal model of thermal contact conductance (TCC) of the involute arc cylindrical gear considering friction coefficient. Design/methodology/approach The influences of fractal dimension, fractal roughness and surface modification coefficient on the TCC of the rough surface were studied. Findings The results indicate that increasing the fractal dimension or reducing the fractal roughness enhances the TCC of the rough surface, and raising the surface correction coefficient contributes to this improvement. Originality/value In this work, the novelty of the work is that the authors first established a novel fractal model of TCC of the involute arc cylindrical gear considering friction coefficient. The achievements of this study provide some theoretical basis for the investigation of the TCC of the involute arc cylindrical gear.

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Section: Introductionmentioning

confidence: 99%

Fractal model of thermal contact conductance of the involute arc cylindrical gear considering friction coefficient

Sun,

Xin

2024

COMPEL

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“…Nevertheless, the real asperities of rough surfaces are 3D, and it is unreasonable to use the 2D fractal theory to describe the 3D asperities. The 3D fractal theory can more realistically describe the asperities of rough surfaces and has been widely used (Pan et al , 2018, 2021). Based on 3D fractal theory, Ji et al (2013) established a TCC model of rough surfaces considering three deformation states of the asperity.…”

Section: Introductionmentioning

confidence: 99%

Thermal contact conductance model of rough surfaces with inclination based on three-dimensional fractal theory

Sun

2024

AEAT

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Purpose The purpose of this study is to establish a thermal contact conductance model of rough surfaces with inclination based on three-dimensional fractal theory. Design/methodology/approach The effects of contact load, inclination angle, fractal dimensional and fractal roughness on thermal contact conductance of rough surfaces were studied using numerical simulation. Findings The results show that the thermal contact conductance of the rough surface increases with the increase of contact load and fractal dimension and decreases with the increase of fractal roughness and inclination angle. The inclination angle of the rough surface has an important influence on the thermal contact conductance of the rough, and it is a factor that cannot be ignored in the study of the thermal contact conductance of rough surfaces. Originality/value A thermal contact conductance model of rough surfaces with inclination based on three-dimensional fractal theory was established in this study. The achievements of this study provide some theoretical basis for the investigation of the thermal contact conductance of rough surfaces.

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“…Nonetheless, because the actual asperities on rough surfaces are 3D in nature, using 2D fractal theory to depict these 3D features is impractical. The 3D fractal theory can describe the 3D asperity of rough surfaces vividly and is widely used (Pan et al , 2021). Based on the 3D fractal theory, Ji et al (2013) developed a TCC model of rough surface that considers the elastic, elastic-plastic and full plastic deformation of asperities and explored the effects of fractal dimension, fractal roughness and material properties on the TCC.…”

Section: Introductionmentioning

confidence: 99%

Fractal model of thermal contact conductance of micro-segment gear considering friction coefficient

Sun

Xin

2023

ILT

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Purpose The purpose of this study is to establish a fractal model of thermal contact conductance (TCC) of micro-segment gear considering friction coefficient. Design/methodology/approach The influences of friction coefficient, fractal dimension, fractal roughness and contact type on the TCC of the rough surface were studied by using numerical simulation. Findings The results show that with the increase of the friction coefficient, the TCC of the rough surface will decrease. As the fractal dimension increases or the fractal roughness decreases, the rough surface becomes smoother and the TCC becomes larger. Under the same load conditions, the TCC of the internal contact type is greater than that of the external contact type. In engineering practice, the desired TCC can be achieved by changing the contact type. Originality/value A fractal model of TCC of micro-segment gear considering friction coefficient was established in this study. The achievements of this study provide some theoretical basis for the investigation of the TCC of the gear.

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Unloading contact mechanics analysis of elastic–plastic fractal surface

Cited by 14 publications

References 23 publications

Fractal model of thermal contact conductance of the involute arc cylindrical gear considering friction coefficient

Fractal model of thermal contact conductance of the involute arc cylindrical gear considering friction coefficient

Thermal contact conductance model of rough surfaces with inclination based on three-dimensional fractal theory

Fractal model of thermal contact conductance of micro-segment gear considering friction coefficient

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