用户名 密 码 登 录 忘记密码 免费注册

网站会员中心 | 设为首页 | 加入收藏

 您好，欢迎光临中国轴承行业网         退出登陆

会员中心 | 设为首页 | 加入收藏

协会

统计

国外文献 > 1.轴承 > 1. 基础理论与机制 > 摩擦与润滑

关键词搜索：

标 题： A comparative study for lubrication of surface textured porous journal bearing with two different non-Newtonian fluid models
基于两种不同非牛顿流体模型的表面纹理多孔轴向轴承润滑对比研究
作 者： Sharma, Rajesh Kumar
Sunil
Kango, Saurabh
Sharma, Nitin
关键词： power law model  [幂律模型]
couple stress fluid model  [ 情侣压力流体模型]
hydrodynamic lubrication  [ 流体动力润滑]
porous journal bearing  [ 多孔轴向轴承]
surface texturing  [ 表面纹理]
出版年： 2016
期刊名： International Journal of Surface Science and Engineering
表面科学与工程国际期刊
年卷期： 2016, vol.10, no.5
摘 要： A study of two non-Newtonian fluid models viz., power law fluid model and couple stress fluid model on the hydrodynamic lubrication of porous journal bearing has been investigated. In addition, sinusoidal type of surface texturing is incorporated at different configurations on the bearing surface to find the performance of the bearing in both cases. The modified Reynolds equation with Darcy model using Reynolds boundary conditions is solved by central differencing technique of finite difference method. The bearing performance characteristics are calculated numerically and are compared with each other. A direct comparison between the two models has been shown graphically. The power law index (n) has taken in the range 1.0 to 1.2 while couple stress parameter (l*) has taken in the range 0 to 0.6. Numerical results show that both models significantly improve the load carrying capacity (W) and reduce coefficient of friction (COF). The results are more effective for low eccentricity ratios instead of high eccentricity ratios. It has also been observed for surface texturing that configuration 3 (72 degrees to 144 degrees) gives optimum results for both load carrying capacity as well as COF, when compared with all other configurations.

本文研究了两种非牛顿流体模型（幂律流体模型和耦合应力流体模型）在多孔轴向轴承水动力润滑中的应用。此外，还在轴承表面不同配置下引入正弦型表面纹理，以分析两种情况下的轴承性能。采用有限差分法的中心差分技术，结合达西模型与雷诺边界条件求解修正后的雷诺方程。轴承性能特征通过数值计算得出，并相互比较。两模型之间的直接对比结果以图形方式展示。幂律指数（n）取值范围为1.0至1.2，而耦合应力参数（l*）取值范围为0至0.6。数值结果表明，两种模型均显著提高了承载能力（W），并降低了摩擦系数（COF）。且在低偏心率比时，效果更为明显，优于高偏心率比的情况。此外，对于表面纹理处理，与所有其他配置相比，配置3（72度至144度）在承载能力以及摩擦系数方面均表现出最佳效果。
中文内容为网络AI翻译，专业术语未必准确，仅供参考。

VIP网员

联系我们 | 登录注册 | 会员管理 | 网员服务 | 服务信息 | 广告服务 | 高薪聘请 | 法律声明 | 关于我们

京公网安备 11010202009788    京ICP备2021015424号