Principles of Tribology

Wen, Shizhu; Huang, Pei

doi:10.1002/9781118062913

Cited by 256 publications

(313 citation statements)

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“…In theory, the dynamic friction force is not related to velocity because there is no change in the pressure and area due to the force [20]. However, the dynamic friction force was small when the velocity was increased because of the changes of the contact surface, which has been confirmed in previous studies [20−22].…”

Section: Resultssupporting

confidence: 66%

Effect of stick-slip on magneto-rheological elastomer with a magnetic field

Lian

Lee

et al. 2017

Friction

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This study investigated the stick-slip characteristics of a magneto-rheological elastomer (MRE) against an aluminum plate. Herein, the MRE was manufactured, and a stick-slip tester was employed to evaluate the stick-slip performance of the MRE under different velocities and load conditions with and without a magnetic field. The fast Fourier transform (FFT) of the friction force of the stick-slip and the roughness of the aluminum plate surface were calculated to confirm the stick-slip phenomenon. After the tests, the wear surfaces were observed to evaluate the wear properties of the MRE regarding the stick-slip. Results showed that the stick-slip was smaller at lower velocity. At higher velocity, the reduction of the stick-slip under a magnetic field was more clearly observed. Moreover, the wear reduced with reduced stick-slip under a magnetic field.

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Section: Resultssupporting

confidence: 66%

Effect of stick-slip on magneto-rheological elastomer with a magnetic field

Lian

Lee

et al. 2017

Friction

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“…The oil rheology is reproduced by linking the empirical Reynolds equation for the temperature dependence of viscosity, 4 as expressed in Eq. (1).…”

Section: -7mentioning

confidence: 99%

“…3 In addition, ensuring the service life of the sealing parts under high-temperature conditions during prolonged operation times is difficult. 4 The phenomenon of boundary slip has long been widely studied, as reported in Refs. 5-8.…”

Section: Introductionmentioning

confidence: 99%

The effect of energy accumulation and boundary slip on laminar flow between rotating plates

Zeng

Chen

et al. 2018

AIP Advances

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The poor operating conditions of fluid lubrication equipment during the start-up process are due to the resistance of the high-viscosity lubricating liquid. Moreover, the excessive reduction in fluid viscosity due to the elevated temperature resulting from power consumption during prolonged operation is not conducive to the generation of dynamic pressure. In this study, we examine the effect of energy accumulation and boundary slip on the laminar flow of a liquid between a pair of rotating plates. The experiments are conducted using a rotary rheometer, with polymethyl methacrylate (PMMA) as the thermal insulation material and polytetrafluoroethylene (PTFE) as the slip drag reduction material, and a three-dimensional simulation model is established. This model is derived by combining the energy equation including the slip length and the heat conduction equation. Thus, the temperature changes over time are predicted by this model, and the model accuracy is verified by experiments. The results reveal the following points: 1) boundary slips function as a drag reduction mechanism for short-time continuous operation; 2) under prolonged operation, the slip reduces the extent of the oil viscosity decrease and clear control of the elevated temperature by the boundary slip is observed.

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“…In this figure, the bush is fixed, and the shaft neck rotates clockwise. The Reynolds equation and the Sommerfeld boundary conditions are used to solve the dynamic pressure distribution in an infinitely long bearing, and then, the bearing capacity is calculated (Wen & Huang, 2008). (Wen & Huang, 2008) The Reynolds equation of the infinitely long bearing represented by polar coordinates is…”

Section: Basic Assumptionsmentioning

confidence: 99%

“…The theory of the lubrication of a radial sliding bearing introduces theories for a fixed bush, shaft neck rotation and/or revolution (Wen & Huang, 2008;Sfyris & Chasalebris, 2012;Santos et al, 2012;Kasolanga et al, 2012), but is inadequate for modeling the other complex conditions (Wang et al, 2004;Li et al, 2005;Wang et al, 2010;Tian et al, 2011;Tian et al, 2012;Yu et al, 2013). In this paper, the theory of continuous oil film lubrication of a radial sliding bearing will be extended to three cases: the shaft neck rotation and bush rotation bearing, the rotation load bearing, and the floating sleeve bearing.…”

Section: Introductionmentioning

confidence: 99%

Applications of the Theory of Continuous Oil Film Lubrication of a Radial Sliding Bearing for Three Combined Conditions

Li¹,

Li²

2016

APR

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The theory of lubrication of a radial sliding bearing is extended to three cases: the shaft neck rotation and bush rotation bearing, the rotating load bearing, and the floating sleeve bearing. For the bearing with rotating shaft neck and rotating bush, fixing the observer at the bushing can enable the determination, in a simple and more accurate manner, of the bearing capacity of the bearing with the rotating load. As long as a rotating load exists, whirl exists; if the shaft rotation speed is 2 times the load rotation speed, then the eccentricity reaches the maximum.

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Principles of Tribology

Cited by 256 publications

References 0 publications

Effect of stick-slip on magneto-rheological elastomer with a magnetic field

Effect of stick-slip on magneto-rheological elastomer with a magnetic field

The effect of energy accumulation and boundary slip on laminar flow between rotating plates

Applications of the Theory of Continuous Oil Film Lubrication of a Radial Sliding Bearing for Three Combined Conditions

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