东北大学学报(自然科学版) ›› 2025, Vol. 46 ›› Issue (11): 90-97.DOI: 10.12068/j.issn.1005-3026.2025.20240077

• 机械工程 • 上一篇    下一篇

考虑流体惯性的球面螺旋槽轴承特性分析

罗忠1,2,3(), 郝昊天1,2, 吴炫睿1,2, 梁堡冰1,2   

  1. 1.东北大学 机械工程与自动化学院,辽宁 沈阳 110819
    2.东北大学 航空动力装备振动及控制教育部重点实验室,辽宁 沈阳 110819
    3.粒子输运与富集技术全国重点实验室,天津 300180
  • 收稿日期:2024-04-07 出版日期:2025-11-15 发布日期:2026-02-07
  • 通讯作者: 罗忠
  • 基金资助:
    国家自然科学基金资助项目(12272089);粒子输运与富集技术全国重点实验室资助项目(WZKF-2024-6);辽宁省“揭榜挂帅”科技攻关计划项目(2023JH1/10400068);中央高校基本科研业务费专项资金资助项目(N2303002)

Characteristics Analysis of Spherical Spiral Groove Bearings Considering Fluid Inertia

Zhong LUO1,2,3(), Hao-tian HAO1,2, Xuan-rui WU1,2, Bao-bing LIANG1,2   

  1. 1.School of Mechanical Engineering & Automation,Northeastern University,Shenyang 110819,China
    2.Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education,Northeastern University,Shenyang 110819,China
    3.National Key Labortory of Particle Transport and Separation Technology,Tianjin 300180,China.
  • Received:2024-04-07 Online:2025-11-15 Published:2026-02-07
  • Contact: Zhong LUO

摘要:

球面螺旋槽轴承作为飞轮储能装置中转子系统的重要承载和振动控制结构,其刚度和阻尼直接影响转子系统的振动行为,进而影响飞轮储能装置的性能与效率.为研究轴承的润滑特性,基于球坐标系下考虑流体惯性的雷诺方程,采用小扰动法推导扰动压力方程,利用有限体积法和有限差分法求解偏微分方程,获得油膜压力分布.通过数值计算分析考虑流体惯性和不考虑流体惯性的油膜压力、承载能力和动态特性.结果表明,当转速和偏心率较大时,流体惯性存在明显的影响,考虑流体惯性的油膜压力、承载力和阻尼更大,刚度更小.

关键词: 球面螺旋槽轴承, 流体惯性, 动态特性, 油膜压力, 小扰动法

Abstract:

Spherical spiral groove bearings (SSGBs) serve as an important bearing and vibration control structure of the rotor system in a flywheel energy storage device, and their stiffness and damping directly affect the vibration behavior of the rotor system, thus controlling the performance and efficiency of the flywheel energy storage device. To study the lubrication characteristics of the bearings, based on the Reynolds equation considering fluid inertia in the spherical coordinate system, the perturbation pressure equation was derived by using the perturbation method. Then, the partial differential equations were solved by using the finite volume and the finite difference methods to obtain the pressure distribution of the oil film. Furthermore, the pressure, load-carrying capacity, and dynamic characteristics of the oil film considering the fluid inertia and disregarding fluid inertia were analyzed by numerical calculations. The results show that when the rotational speed and eccentricity are larger, the fluid inertia has an obvious influence; the oil film pressure, load-carrying capacity, and damping considering fluid inertia are larger, and the stiffness is smaller.

Key words: spherical spiral groove bearing, fluid inertia, dynamic characteristic, oil film pressure, perturbation method

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