...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Mechanical Engineering and Applications >Externally Pressurized Thrust Spherical Bearing Performance Under Variable Lubricant Viscosity (Un-recessed Clearance Type)
【24h】

Externally Pressurized Thrust Spherical Bearing Performance Under Variable Lubricant Viscosity (Un-recessed Clearance Type)

机译：可变润滑剂粘度下的外部加压推力球形轴承性能（未嵌入清关式）

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In a previous study handling this subject, a series of six papers has been published covering the fitted type (equal radii of this sort of bearings) with its configurations in details. The present study handles the same subject investigating the clearance type of this sort of bearings starting with the un-recessed one. The clearance type of bearings, where the sphere radius is smaller than that of the seat, provides plenty of complications and great divergence in its behavior compared with the fitted one. The study investigates theoretically the bearing behavior under the lubricant viscosity variation in the presence of the centripetal inertia due to the shaft rotation and the surface roughness. Solutions have been derived for the un-recessed clearance type of bearings with hemispherical and partial hemispherical seats in addition to its two special cases using capillary tube and orifice restrictors. Unlike other studies, using the conventional integration (i.e., without using the Sommerfeld substitution), only one equation with one form for the pressure gradient is derived to cover the positive and negative eccentricity ratios. Expressions for the pressure distribution, temperature distribution in turn the temperature rise, load carrying capacity; volume flow rate, frictional torque, friction factor, power losses and stiffness factor are obtained. The study shows the combined effects of the viscosity variation, the centripetal inertia and the surface roughness on the bearing performance. The optimum design (with constant viscosity) based on the minimum power losses, minimum flow rate and the optimal restrictor dimensions, in a previous study is checked where it is found out that designing this type of bearings on such basis only is not sufficient in despite of the bearing consistency. A natural dynamic phenomenon ignored in the previous study is revealed and briefly touched.
机译：在先前的研究处理该主题中，一系列六篇论文已发布覆盖着其配置的拟合类型（这种轴承的平等半径）。目前的研究处理与未嵌入的轴承开始的这种轴承的间隙类型处理相同的主题。与座椅小于座椅小于座椅的球形半径小于座椅的间隙轴承的间隙类型提供了大量的并发症和巨大的发散。本研究根据轴旋转和表面粗糙度，理论上调查润滑剂粘度变化下的润滑剂粘度变化下的轴承行为。除了使用毛细管和孔口限制器的两种特殊情况外，还可用于未嵌入的轴承的轴承的轴承的轴承。与其他研究不同，使用传统的积分（即，不使用Sommerfeld替代），导出仅具有一种形式的一个形式的一个等式，以覆盖正偏心率和负偏心率。用于压力分布的表达，温度分布反应温升，承载能力;体积流量，摩擦扭矩，摩擦因子，功率损耗和刚度因子。该研究表明了粘度变化，离心惯性和表面粗糙度对轴承性能的综合影响。在先前的研究中，基于最小功率损耗，最小流量和最佳限制尺寸的最佳设计（具有恒定粘度），在此情况下发现，尽管虽然依次设计了这种类型的轴承，但尽管轴承一致性。在以前的研究中忽略了一种自然的动态现象，揭示并简要触及。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号