A nano-lubrication solution for high-speed heavy-loaded spur gears and stiffness modelling

Huang, Xingbao; Yang, Bintang; Wang, Youqiang

doi:10.1016/j.apm.2019.03.008

Cited by 23 publications

(11 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The stiffness of these 'small springs' was added to obtain the oil film stiffness throughout the contact zone. 27 The specific formula for calculating oil film stiffness based on the global method can be expressed as…”

Section: Load Equationmentioning

confidence: 99%

“…It was assumed that at each node in the Hertz contact zone, the oil film consisted of a number of parallel ‘small springs’. The stiffness of these ‘small springs’ was added to obtain the oil film stiffness throughout the contact zone 27 …”

Section: The Model Of Ehlmentioning

confidence: 99%

“…Yuan et al [23][24][25] considered the coupling effect of lubrication and vibration and studied the distribution of oil film pressure and thickness in mixed lubrication as well as the relationship between oil film stiffness and lubricant viscosity. Some scholars [26][27][28][29] have also studied the stiffness characteristics of an oil film under static loading.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of lubricating performance for involute spur gear under vibration

Jian

Wang

Zhang

et al. 2020

Lubrication Science

Self Cite

View full text Add to dashboard Cite

In order to investigate the dynamic characteristics of an oil film under vibration, the dynamic model of an involute gear system was established based on the dynamics theory. The vibration and lubrication characteristics of the gear system were analysed in detail. Furthermore, based on the numerical solution of lubrication, a model of oil film stiffness was established. The dynamic characteristics of the oil film were verified by calculating the oil film stiffness. It was found that both oil film pressure and thickness manifested certain dynamic characteristics under vibration. Moreover, the intensities of oscillation amplitude and frequency were different under different loads and rotating speeds. The oil film stiffness gradually decreased and increased, respectively, with the increasing rotating speed and load. Therefore, for a heavy-duty high-speed gear system, the coupling effect of vibration and lubrication should be considered.

show abstract

Section: Load Equationmentioning

confidence: 99%

Section: The Model Of Ehlmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of lubricating performance for involute spur gear under vibration

Jian

Wang

Zhang

et al. 2020

Lubrication Science

Self Cite

View full text Add to dashboard Cite

show abstract

“…Time-varying meshing stiffness is an important factor in the dynamic response of gears, but in the study of gear dynamics, most of them only consider the meshing stiffness of gears, and the oil film stiffness is ignored. Even if the influence of oil film stiffness is considered, most of them only limited to normal direction, the research on oil film tangential stiffness is neglected [23,24], and most of them do not consider the influence of thermal effect. In addition, the shearing force produced by the relative sliding between the meshing tooth surfaces makes the oil film temperature rise, while the high-pressure compression also causes the lubricating oil heat up.…”

Section: Introductionmentioning

confidence: 99%

Oil Film Stiffness of Double Involute Gears Based on Thermal EHL Theory

Yin

Zhang

Jiang

2021

Chin. J. Mech. Eng.

View full text Add to dashboard Cite

Lubrication failure is one of the main failure forms of gear failure. Time varying meshing stiffness is an important factor affecting the dynamic behavior of gears. However, the influence of oil film stiffness is usually ignored in the research process. In this paper, according to the meshing characteristics of double involute gears, based on the non-Newtonian thermal EHL theory, a new calculation method of normal and tangential oil film stiffness for double involute gears is established by the idea of subsection method. The oil film stiffness difference between double involute gears and common involute gears is analyzed, and the influence of tooth waist order parameters, working conditions, and thermal effect on the oil film stiffness are studied. The results reveal that there are some differences between normal and tangential oil film stiffness between double involute gears and common involute gears, but there is little difference. Compared with the torque, rotation speed and initial viscosity of the lubricating oil, the tooth waist order parameters have less influence on the oil film stiffness. Thermal effect has a certain influence on normal and tangential oil film stiffness, which indicates that the influence of thermal effect on the oil film can not be ignored. This research proposes a calculation method of normal and tangential oil film stiffness suitable for double involute gears, which provides a theoretical basis for improving the stability of the transmission.

show abstract

“…Jiao et al [20] synthesized alumina/silica (Al 2 O 3 /SiO 2 ) composite nanoparticles with a hydrothermal method and silane coupling agent modification, and investigated the tribological behaviors of the modified alumina/ silica (Al 2 O 3 /SiO 2 ) composite nanoparticles as lubricating oil additives by using four-ball and thrust-ring tests. Huang et al [21] revised the density equation and viscosity equation with the consideration of nanoparticles and investigated the lubrication mechanism on the condition of surface roughness to explain how nanofluids affect the lubrication performance of high-speed gear drives. Elomaa et al [22] found that compared with the pure ethylene glycol, remarkable decrease was seen in friction coefficient with the application of nanodiamond dispersions in ethylene glycol by using pin-on-disc tribometer.…”

Section: Introductionmentioning

confidence: 99%

A theoretical investigation on the lubrication mechanism of moving particles in elliptical contact

Huang¹,

Zhang²,

You-qiang³

2020

Phys. Scr.

Self Cite

View full text Add to dashboard Cite

Numerous friction and wear experiments have demonstrated that nanoparticles (NNPs) perform excellently in friction coefficient reduction and anti-wear. However, theoretical explanation of the facilitated lubrication mechanism of NNPs is of complexity. This paper proposed a revised Reynolds equation taking moving particles into consideration. Through mutually coupling the governing equations the causes of wear reduction contributed by NNPs are well understood. Considering thermal effect, time-varying effect and particles motion, effects of particles motion on the tribology performance of elliptical contact was investigated. Furthermore, the influences of two deterministic particles’ distributions compared with base oil were discussed. Results show that the motion of moving particles from inlet to outlet induces remarkable increases in film thickness and considerable decreases in coefficient of friction, while also leads to evident rise of temperature and significant backflows in inlet zone. Additionally, particles with appropriate concentration are beneficial to the enhancement of lubricating film performance.

show abstract

A nano-lubrication solution for high-speed heavy-loaded spur gears and stiffness modelling

Cited by 23 publications

References 37 publications

Analysis of lubricating performance for involute spur gear under vibration

Analysis of lubricating performance for involute spur gear under vibration

Oil Film Stiffness of Double Involute Gears Based on Thermal EHL Theory

A theoretical investigation on the lubrication mechanism of moving particles in elliptical contact

Contact Info

Product

Resources

About