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Coefficient of friction of a starved lubricated spur gear pair

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Abstract

The frictional power loss issue of gear pairs becomes an important concern in both industry and academia due to the requirement of the energy saving and the improvement of power density of gear drives. A thermal starved elastohydrodynamic lubrication model is developed to study the tribological performance of a spur gear pair under starved lubrication conditions. The contact pressure, the film thickness, the temperature rise, the frictional power loss, as well as the coefficient of friction are evaluated by considering the variation of the curvature radius, the sliding/rolling motion, and the load distribution of gear tooth within the meshing period. Effects of lubrication starvation condition, load and speed on the coefficient of friction are studied.

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Authors and Affiliations

  1. State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing, China

    Huaiju Liu, Caichao Zhu, Zhangdong Sun, Yuanyuan Zhang & Chaosheng Song

Authors
  1. Huaiju Liu
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  2. Caichao Zhu
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  3. Zhangdong Sun
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  4. Yuanyuan Zhang
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  5. Chaosheng Song
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Correspondence to Huaiju Liu.

Additional information

Recommended by Associate Editor In-Ha Sung

Huaiju Liu, born in 1986, received the Ph.D. from the University of Warwick, UK in 2013. His research fields include tribology and dynamics of power transmissions.

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Liu, H., Zhu, C., Sun, Z. et al. Coefficient of friction of a starved lubricated spur gear pair. J Mech Sci Technol 30, 2171–2177 (2016). https://doi.org/10.1007/s12206-016-0424-y

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  • DOI: https://doi.org/10.1007/s12206-016-0424-y

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