Analysis of bearing lubrication under dynamic loading considering micropolar and cavitating effects

Analysis of bearing lubrication under dynamic loading considering micropolar and cavitating effects
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考虑微极效应和空化效应的动载荷下轴承润滑分析

DOI:
10.1016/j.triboint.2011.05.002
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发表时间:
2011-08
影响因子:
6.2
通讯作者:
--
中科院分区:
工程技术1区
文献类型:
--
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基于改进的Elord空化算法和超松弛法,对微极流体动载滑动轴承进行了数值计算。结果表明,基于质量守恒边界条件的平均入流流量和平均出流流量基本相等,与实际情况相符。然而,在雷诺边界条件下,平均流入和流出之间显示出很大的差异。微极流体润滑使最小油膜厚度增大,最大油膜压力降低,轴承承载能力和摩擦功耗增大。
Numerical computation of the dynamically loaded journal bearings lubricated with micropolar fluids is undertaken based on the improved Elord cavitation algorithm and over-relaxation method. The results show that the average inflow and average outflow based on the mass conservation boundary conditions are almost equal, which is in accordance with the fact. However, under the Reynolds boundary conditions, large difference is shown between the average inflow and outflow. It is also demonstrated that with the micropolar fluids lubrication, the minimum film thickness, bearing capacity and friction power loss are increased while the maximum film pressure is decreased.
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