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Thermal elastohydrodynamic lubrication of modified gear system considering vibration

考虑振动的变位齿轮系统热弹流润滑

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Abstract

The thermal elastohydrodynamic lubrication characteristics of a modified gear system under a dynamic load were investigated, including the influence of the modification coefficient and vibrations. Based on the dynamic theory of gear systems, a six-degree-of-freedom tribo-dynamics model was established. Thermal elastohydrodynamic lubrication characteristics of a modified gear system under vibrations and a static load were analyzed. The results showed that the positive transmission gear system exhibited the better lubrication effect compared with other transmission types. A thick lubricating oil film could be formed, and the friction coefficient between the teeth and the oil film flash temperature was the smallest. As the modification coefficient increased, the lubrication condition was continuously improved, and the scuffing load capacity was enhanced. The increment of the modification coefficient increased the meshing stiffness of the gear system but reduced the stiffness of the oil film.

摘要

为了探究动载荷作用下变位齿轮系统的热弹流润滑特性, 综合考虑齿轮变位和振动的影响, 基 于动力学理论, 建立了齿轮的六自由度摩擦动力学模型, 分析振动与静载荷作用下变位齿轮系统的热 弹流润滑特性。研究表明, 与其他传动类型相比, 正传动齿轮系统的润滑效果最佳, 轮齿间可以形成 较厚的润滑油膜, 轮齿间的摩擦因数、油膜的最高温升最小, 并且, 随着两齿轮变位系数和的增大, 润滑状况不断得到改善, 热胶合承载能力增强; 变位系数增加使齿轮系统的刚度增大, 但同时也降低 了油膜的刚度。

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Authors and Affiliations

  1. School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao, 266520, China

    Guang-xiao Jian  (菅光霄), You-qiang Wang  (王优强), Yun-kai Li  (李云凯) & Heng Luo  (罗恒)

  2. School of Mechanical Engineering, East China University of Science and Technology, Shanghai, 200237, China

    Ping Zhang  (张平)

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  1. Guang-xiao Jian  (菅光霄)
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  2. You-qiang Wang  (王优强)
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  3. Ping Zhang  (张平)
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  4. Yun-kai Li  (李云凯)
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  5. Heng Luo  (罗恒)
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Contributions

The overarching research goals were developed by JIAN Guang-xiao and WANG You-qiang. JIAN Guang-xiao and WANG You-qiang put forward the research ideas. JIAN Guang-xiao, WANG You-qiang, ZHANG Ping, LI Yun-kai and LUO Heng established the models. JIAN Guang-xiao debugged the program, got the research data and accomplished the relevant analysis. The initial draft of the manuscript was written by JIAN Guang-xiao. All authors replied to reviewer’ comments and revised the final version.

Corresponding author

Correspondence to You-qiang Wang  (王优强).

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Conflict of interest

JIAN Guang-xiao, WANG You-qiang, ZHANG Ping, LI Yun-kai and LUO Heng declare that they have no conflict of interest.

Foundation item

Projects(51575289, 51705270) supported by the National Natural Science Foundation of China

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Jian, Gx., Wang, Yq., Zhang, P. et al. Thermal elastohydrodynamic lubrication of modified gear system considering vibration. J. Cent. South Univ. 27, 3350–3363 (2020). https://doi.org/10.1007/s11771-020-4551-3

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