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Dynamic characteristics of gear system under different micro-topographies with the same roughness on tooth surface

齿面粗糙度相同的不同齿面微观形貌下齿轮系统的动态特性

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Abstract

The topography of gear meshing interfaces is one of the key factors affecting the dynamic characteristics of the gear transmission system. In order to obtain the contact characteristics of meshing gear pair with different surface micro-topographies, an interface feature model and a tribo-dynamics coupling model for the gear system are proposed in this paper. The effects of the gear tooth surface micro-topography on the oil film distribution, contact damping and friction are considered. The time-varying meshing stiffness and the static transmission error are included in the abovementioned models. An exemplary gear pair is analyzed using the proposed models to investigate the influence of the surface micro-topography on the dynamic characteristics of gear system under different micro-topographies and input torque conditions. Simulation results show that the effects of gear tooth micro-topography on the gear dynamic responses (including the friction and the vicious damping at the gear meshing interface and the vibration in the direction of offline of action) are highly dependent on the regularity of tooth surface. The vibration and noise can be significantly controlled by manufacturing a regular gear tooth profiles instead of random profiles.

摘要

齿轮啮合面微观形貌是影响齿轮传动系统动力学特性的重要原因之一。本文建立了一个包含啮 合面啮合特性和摩擦动力学的耦合模型,旨在研究具有不同齿面微观形貌的齿轮动力学特性。该模型 考虑了齿面形貌对啮合面间润滑油膜厚度分布、接触阻尼以及摩擦力的影响,同时考虑了时变啮合刚 度和静传递误差等激励元素。以一对齿轮副为研究对象,利用该模型研究了不同齿面微观形貌但相同 齿面粗糙度以及不同负载工况下该齿轮副的动力学行为。仿真结果表明,齿面微观形貌的几何规则度 直接影响齿轮动力学响应(啮合面间的摩擦力,黏性阻尼以及摩擦力方向的振动)。通过加工更规则(而 非随机)的齿面能有效降低齿轮系统的振动和噪音。

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Authors and Affiliations

  1. State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing, 400044, China

    Lei Yin  (殷雷), Chun-long Deng  (邓春龙), Yi-min Shao  (邵毅敏) & Li-ming Wang  (王利明)

  2. College of Mechanical Engineering, Chongqing University, Chongqing, 400044, China

    Wen-nian Yu  (余文念)

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  1. Lei Yin  (殷雷)
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  2. Chun-long Deng  (邓春龙)
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Correspondence to Yi-min Shao  (邵毅敏).

Additional information

Foundation item: Projects(51905053, 51805051) supported by the National Natural Science Foundation of China; Project(cstc2019jcyj-bshX0119) supported by the Chongqing Postdoctoral Science Foundation, China

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Yin, L., Deng, Cl., Yu, Wn. et al. Dynamic characteristics of gear system under different micro-topographies with the same roughness on tooth surface. J. Cent. South Univ. 27, 2311–2323 (2020). https://doi.org/10.1007/s11771-020-4451-6

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  • DOI: https://doi.org/10.1007/s11771-020-4451-6

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