国外文献 > 1.轴承 > 1. 基础理论与机制 > 承载与性能
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| 标 题： |
A comparative performance assessment of hydrostatic thrust bearings operating with electrorheological lubricant
采用电动流变润滑剂运行的静压推力轴承的对比性能评估 |
| 作 者： |
Singh, Atul Kumar
Kumar, Vivek
Singh, Simran Jeet
Sharma, Naveen
Choudhary, Divya |
| 关键词： |
Hydrostatic thrust bearing [静压推力轴承]
Electrorheological lubricant [ 电动流变润滑剂]
Compensating elements [ 补偿元件]
Rotor-dynamic performance [ 转子动态性能]
Pocket shapes [ 凹槽形状]
FEM [ 有限元法]
STATIC CHARACTERISTICS [ 静态特性]
BEHAVIOR [ 行为]
FRICTION [ 摩擦]
SURFACES [ 表面]
FLUIDS [ 流体] |
| 出版年： |
2022 |
| 期刊名： |
Industrial Lubrication and Tribology
工业润滑与摩擦学 |
| 年卷期： |
2022, vol.74, no.7 |
| 摘 要： |
Purpose An electrorheological (ER) fluid comprises dielectric particles suspended in an insulating viscous medium. ER lubricants are considered smart lubricants. They have been applied in hydraulic valves, power transmission devices and damping systems. The purpose of this study is to investigate the performance of hydrostatic thrust bearing operating with ER lubricant. Design/methodology/approach Reynold's equation was used to model the flow of the ER lubricant in the bearing. The continuous Bingham model was used to express the viscosity of the ER lubricant as a function of yielding stress, applied electric field and shear strain rate. The Reynolds equation is solved using the finite element method (weighted residual approach) to compute the film pressure as a primary variable and the lubricant flow rate, load-carrying capacity, stiffness and damping parameters as associated performance indices. Findings The effects of the pocket shape, compensating elements and ER lubricant on the bearing performance were investigated. The application of ER lubricant significantly enhanced the load-carrying capacity (48.2%), stiffness (49.8%) and damping (4.95%) of the bearings. Circular and triangular pocket bearings with constant-flow valves have been reported to provide better steady-state and rotor-dynamic performances, respectively. Originality/value This study presents the effect of an ER lubricant on the rotor-dynamic performance of hydrostatic thrust bearings with different pocket shapes.
目的 一种电动流变（ER）液体由悬浮在绝缘粘性介质中的电介质颗粒组成。ER 润滑剂被视为智能润滑剂。它们已被应用于液压阀、动力传输装置和减震系统中。本研究的目的在于探究使用 ER 润滑剂的静压推力轴承的性能。设计/方法/途径 利用雷诺方程对轴承内的 ER 润滑剂流动进行建模。采用连续的宾汉模型来表示 ER 润滑剂的粘度，其粘度随屈服应力、施加的电场和剪切应变率而变化。通过有限元方法（加权残差法）求解雷诺方程，以计算薄膜压力作为主要变量，以及润滑剂流量、承载能力、刚度和阻尼参数作为相关性能指标。结果 对于轴承性能的影响因素进行了研究，包括凹槽形状、补偿元件和 ER 润滑剂。使用 ER 润滑剂显著提高了轴承的承载能力（48.2%）、刚度（49.8%）和阻尼（4.95%）。带有恒流阀的圆形和三角形凹槽轴承已被报道分别能提供更好的稳态性能和转子动态性能。创新性/价值 本研究探讨了弹性环润滑剂对不同凹槽形状的静压推力轴承转子动态性能的影响。 |
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