计入温黏效应的高速径向动压轴承特性分析

发布时间：2018-01-03 07:02

  本文关键词：计入温黏效应的高速径向动压轴承特性分析　出处：《润滑与密封》2016年08期 　论文类型：期刊论文

  更多相关文章： 高速动压轴承 温黏效应 特性系数

【摘要】：以高速径向动压轴承为研究对象,分析温黏效应对油膜静、动态特性的影响;通过联立求解二维雷诺方程、能量方程和温黏方程,得到油膜压力分布、温度分布和黏度分布,进而求出承载力、摩擦力等静特性系数和刚度系数、阻尼系数。计算结果表明,油膜温度由入口处沿周向上升,在破裂边前达到最大,温度沿轴向变化不大;计入温黏效应,油膜偏位角增大,承载力、摩擦力和侧泄量均减小,且随着转速升高和偏心率增大,变化趋势愈加明显;计入温黏效应,油膜动特性系数明显减小,且转速越高、偏心率越大影响越显著。
[Abstract]:The influence of temperature viscosity effect on the static and dynamic characteristics of oil film is analyzed by taking the high speed radial dynamic bearing as the research object. By solving two dimensional Reynolds equation, energy equation and temperature viscosity equation, the oil film pressure distribution, temperature distribution and viscosity distribution are obtained, and the static characteristic coefficient and stiffness coefficient such as bearing capacity, friction force and so on are obtained. Damping coefficient. The calculated results show that the oil film temperature rises from the inlet to the circumference, reaches the maximum before the rupture edge, and the temperature changes little along the axial direction. When the temperature viscosity effect is taken into account, the oil film deviation angle increases, the bearing capacity, friction force and lateral discharge decrease, and with the increase of rotational speed and eccentricity, the change trend becomes more and more obvious. When the temperature viscosity effect is taken into account, the dynamic coefficient of oil film decreases obviously, and the higher the rotational speed, the greater the influence of eccentricity.
【作者单位】： 郑州大学机械工程学院;
【基金】：国家自然科学基金项目(51575498)
【分类号】：TH133.37
【正文快照】： )j縥縥縥縥縥縥，

本文编号：1372861