国外文献 > 1.轴承 > 4. 设计与分析 > 数值方法
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| 标 题： |
A comparative performance assessment of hydrostatic thrust bearings operating with electrorheological lubricant
电液润滑剂运行的静液压推力轴承的比较性能评估 |
| 作 者： |
Singh, Atul Kumar
Kumar, Vivek
Singh, Simran Jeet
Sharma, Naveen
Choudhary, Divya |
| 关键词： |
Hydrostatic thrust bearing [静液压推力轴承]
Electrorheological lubricant [ 电液润滑剂]
Compensating elements [ 补偿元件]
Rotor-dynamic performance [ 转子动态性能]
Pocket shapes [ 口袋形状]
FEM [ 女性]
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 电液流体（ER）由介电颗粒悬浮于绝缘粘性介质中组成。ER润滑剂被视为智能润滑剂，已应用于液压阀、动力传动装置和阻尼系统。本研究旨在探究使用ER润滑剂的静压推力轴承的性能。设计/方法/途径 采用雷诺方程对轴承内ER润滑剂的流动进行建模。使用连续宾厄姆模型，将ER润滑剂的黏度表示为屈服应力、施加电场和剪切应变率的函数。通过有限元法（加权残差法）求解雷诺方程，以膜压力作为主要变量，润滑剂流量、承载能力、刚度和阻尼参数作为相关性能指标。结果结果结果 研究了凹槽形状、补偿元件及ER润滑剂对轴承性能的影响。应用ER润滑剂显著提高了轴承的承载能力（48.2%）、刚度（49.8%）和阻尼性能（4.95%）。研究表明，采用恒流阀的圆形和三角形凹槽轴承分别能提供更好的稳态性能和转子动态性能。原创性/价值：本研究探讨了ER润滑剂对不同凹槽形状静压推力轴承转子动态性能的影响。 |
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