Lubricating behavior of tripod sliding universal joints

Wang, X.F.; Chang, De Gong

doi:10.1108/00368791011012425

Cited by 3 publications

(3 citation statements)

References 14 publications

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“…Some researchers have studied the lubricating properties of the TSUC. Wang and Chang (2009, 2010) analyzed the effects of various factors on the film thickness and the pressure distribution of the oil lubricating. Chang et al (2010) investigated the effect of effective radius on oil lubricating properties considering the thermal effect.…”

Section: Introductionmentioning

confidence: 99%

Grease thermal elastohydrodynamic lubrication properties of tripod sliding universal couplings

Zhou

Chang

2018

ILT

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Purpose This paper aims to improve the grease thermal elastohydrodynamic lubrication (TEHL) properties of the tripod sliding universal coupling (TSUC) under automotive practical conditions. For this purpose, the effect of effective radius was theoretically investigated. Design/methodology/approach Based on the simplified geometric model, the effect of effective radius on the pressure distribution, film thickness and temperature distribution of the TSUC was theoretically investigated using the multigrid and stepping methods. The TEHL properties were compared with the results obtained using the isothermal calculation method. Findings The results show that the thermal effect has a great impact on the film thickness and the pressure distribution of grease lubrication properties. Moreover, larger effective radius results in a wider but lower pressure distribution, a wider and thicker lubricating film and a lower temperature distribution. Originality/value The TSUC can be widely used in the front drive automotive transmission because it can transmit larger torque than before. The effect of effective radius on the thermal grease lubrication properties under automotive practical conditions provides a new direction for designing it.

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Section: Introductionmentioning

confidence: 99%

Grease thermal elastohydrodynamic lubrication properties of tripod sliding universal couplings

Zhou

Chang

2018

ILT

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“…The effects affect oil film thickness and pressure distributions in the tripod sliding universal joint have been analyzed by Chang (2009, Wang et al (2014). Wang and Chang (2010) investigated the effects of reduced elastic modulus, applied load and lubricant viscosity on the oil film thickness and pressure distributions. Chang et al (2010) presented the oil lubricating properties of TSUCs considering thermal effect.…”

Section: Introductionmentioning

confidence: 99%

Analysis on grease lubrication properties of the tripod sliding universal coupling in automotive transmission shaft

Zhou

Chang

2017

ILT

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Purpose This paper aims to investigate the grease isothermal lubrication properties of the tripod sliding universal coupling (TSUC) in automotive transmission shaft and study its impact on a variety of factors to improve its grease lubrication properties. Design/methodology/approach Based on the simplified geometrical model, the research of grease lubrication properties of the TSUC was analyzed, and compared with oil lubrication in same parameters. Then the effects of effective radius, frequency (vehicle speed) and amplitude (angle between intermediate shaft and input shaft) on grease isothermal lubrication properties are theoretically investigated by using multigrid methods. Findings The results indicate that the grease isothermal elastohydrodynamic lubrication (EHL) film thickness shape and pressure distribution shape of the TSUC are similar to the oil lubrication, but the film thickness of grease lubrication is less than that of oil lubrication. Higher effective radius results in a wider pressure distribution, a lower center pressure and a thicker lubricating film. Higher frequency (vehicle speed) results in a remarkable second pressure peak and a thicker lubricating film. The effects of amplitude (angle between intermediate shaft and input shaft) and frequency have similar tendencies. Originality/value The numerical analysis research on grease lubrication properties of the TSUC is significant because the automotive transmission shaft is widely used. And it provides a new direction in designing TSUCs.

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“…In the previous investigation of TSUJ, Chang (2009b, 2010) and Chang et al (2010) observed its lubricating performance by using the simplified geometric model (Wang and Chang, 2010) shown in Figure 3 under isothermal Newtonian flow conditions and then further studied the effect of the effective radius on the lubricating behavior thereof considering thermal effect. In this work, the lubricating properties of the TSUJ were also investigated by using the simplified geometric model shown in Figure 3 under thermal Newtonian flow condition.…”

Section: Introductionmentioning

confidence: 99%

Effects of reciprocating motion parameters on lubricating properties of tripod sliding universal joints

Wang

Hu²,

Wang³

et al. 2014

Industrial Lubrication and Tribology

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Purpose -This paper aims to clarify the effects of the reciprocating motion parameters on the lubricating performance of the tripod sliding universal joint (TSUJ). These parameters mainly include the frequency and amplitude of the reciprocating motion. This work will explain how the film thickness and pressure as well as the temperature vary with the frequency and amplitude of the reciprocating motion in order to improve the lubricating performance of the TSUJ and extend its working life. Design/methodology/approach -Based on the simplified geometrical model derived from the main mating surfaces, the effects of the frequency and amplitude on the pressure and film thickness as well as the temperature are theoretically investigated. In this work, multi-level method, multilevel multi-integration method and sequential line sweeping method were applied to solving Reynolds equation, the elastic deformation of the bounding surfaces and temperature, respectively. Findings -The overall film thickness increases with the increase of the amplitude or frequency. The consumed time of the rippled film passing through the contact zone hardly depends on the amplitude or frequency. The variation of the film or temperature lags behind the variation of the entrainment velocity. Increasing amplitude or frequency increases the temperature. The effect of the amplitude or frequency on the pressure focuses mainly on the second pressure peak. Originality/value -TSUJ is a new-type tripod joint and the obtained results are of great value for its design and application.

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Lubricating behavior of tripod sliding universal joints

Cited by 3 publications

References 14 publications

Grease thermal elastohydrodynamic lubrication properties of tripod sliding universal couplings

Grease thermal elastohydrodynamic lubrication properties of tripod sliding universal couplings

Analysis on grease lubrication properties of the tripod sliding universal coupling in automotive transmission shaft

Effects of reciprocating motion parameters on lubricating properties of tripod sliding universal joints

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