Effects of rotor surface texture on rotary vane actuator end sealing performance

Hu, Tang; Xie, Liangxi; Jing-rong, Liu

doi:10.1016/j.triboint.2019.105868

Cited by 10 publications

(4 citation statements)

References 14 publications

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“…Although, numerous studies on the application of surface texturing were conducted, the study on its application in the RVA end seal is still lacking. In [13], the authors only confirmed the feasibility of surface texture application in RVA, without thorough study.…”

Section: Introductionmentioning

confidence: 97%

Effect of surface texturing on rotary vane actuator under different lubrication regimes

Hu¹,

Xie²,

Fan³

et al. 2022

Surf. Topogr.: Metrol. Prop.

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In this study, surface texturing was considered to solve the problem of the frictional surface of the rotary vane actuator end seal having difficulty in generating hydrodynamic lubrication. However, the current studies mostly set the minimum oil film thickness as a constant value, which could not reflect the real situation. A lubrication model for textured surfaces under different lubrication regimes was first established in this study based on the mean Reynolds equation and boundary lubrication theory. The model just required assuming the initial value of the minimum oil film thickness, and then the value was automatically corrected by the program in the calculation until the result converged. The rationality of the model was verified by comparing the model results with the friction experimental results. Subsequently, the trend of the friction coefficients for circular and square textures at different speeds and area ratios was analysed to investigate the effects of texture shape, area ratio and speed on the friction of the textured interface under this model.

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Section: Introductionmentioning

confidence: 97%

Effect of surface texturing on rotary vane actuator under different lubrication regimes

Hu¹,

Xie²,

Fan³

et al. 2022

Surf. Topogr.: Metrol. Prop.

Self Cite

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“…The micro textured samples exhibit a lower wear rate and friction coefficient, according to the pin‐disc friction test. Hu et al 16 machined circular micro pits on the sealing pair rotor surface. The theoretical model was created using the hydrodynamic lubrication equation, and the verification UMT‐3 friction experiment was performed.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation and experimental investigation on tribological performance of SiC surface with squamous groove micro texture

Li²,

Hao

et al. 2022

Lubrication Science

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To improve the tribological characteristics of the face seal, the squamous groove micro textures with different area proportion and the circular dimple micro texture were designed and manufactured. The disc-disc friction and wear experiments and numerical simulation were carried out in oil lubrication. The pressure distribution, friction coefficient, fluid temperature and wear morphology are investigated. The study show that the friction coefficients of the micro textured and untextured samples decline with the increase of load, but first increase and then decrease with the rise of rotational speed. Micro textured samples could decline the friction coefficient effectively, and the asymmetric structure in the lubricant inflow and outflow region of the squamous groove micro texture makes it have better tribological performance. In addition, the micro texture can increase heat dissipation area, reduce heat production and collect wear debris, which could modify the lubricant temperature and wear morphology effectively.

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“…The researches indicated that with the texture’s depth from 5 to 20 µ m, the solid asperity contacts and friction were significantly decreased, particularly from 5 to 5.5 µ m with the CD or SD (Babu et al , 2020; Jiao et al , 2020; Rosenkranz et al , 2019b). Based on the outstanding advantages of the CD or SD, the bearing surface of journal bearings was also designed by the CD or SD to improve lubrication and friction between the shaft and bearing surfaces (Gropper et al , 2016; Hu et al , 2019; Martan et al , 2020). The friction force and coefficient of friction were also significantly decreased.…”

Section: Introductionmentioning

confidence: 99%

Research on different structures of dimpled textures on improving the LE-FPL of engine

Wang

Nguyen

et al. 2021

ILT

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Purpose This paper aims to research the effect of the different structures of dimpled textures on the rod bearing surfaces on improving the engine’s lubrication efficiency and friction power loss (LE-FPL). Design/methodology/approach Based on the hydrodynamic model of the rod bearing, the effect of different structures of dimpled surfaces including circular dimples (CD), square dimples (SD), wedge-shaped dimples (WSD), circular-square dimples (CSD) and square-wedge-shaped dimples (SWSD) on ameliorating the LE-FPL is analyzed under the different operating conditions of the engine. The oil film pressure (p), asperity contact force (Wac), friction force (Ff) and coefficient of friction (COF) of the rod bearing are chosen to evaluate the LE-FPL. Findings The SD’s performance on improving the LE-FPL is better than all other structures of the CD, WSD, CSD and SWSD. Particularly, the average values of Wac, Ff and COF with the SD is significantly reduced by 14.5%, 28.5% and 33.3% compared to the optimal dimensions of the rod bearing; and by 26.4%, 34.5% and 43.7% compared to the optimal CD (n = m = 6). Originality/value The generated friction between surfaces of rod bearings of the engine not only reduces the engine power but also affects the durability of the structures. Thus, the optimal design of the SD to further improve the LE-FPL is very necessary.

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Effects of rotor surface texture on rotary vane actuator end sealing performance

Cited by 10 publications

References 14 publications

Effect of surface texturing on rotary vane actuator under different lubrication regimes

Effect of surface texturing on rotary vane actuator under different lubrication regimes

Numerical simulation and experimental investigation on tribological performance of SiC surface with squamous groove micro texture

Research on different structures of dimpled textures on improving the LE-FPL of engine

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