Dynamic and Static Properties of Recessed Hydrostatic Journal Bearings by Small Displacement Analysis
Dynamic and Static Properties of Recessed Hydrostatic Journal Bearings by Small Displacement Analysis
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DOI：
10.1115/1.3251441
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发表时间：
1980
期刊：
影响因子：
--
通讯作者：
W. Rowe
中科院分区：
文献类型：
--
作者：
W. Rowe
给出了毛细管、孔板和恒流控制的静水刚度、水动力刚度和挤压阻尼系数。由于这种轴承的线性特性，这些系数可用于保守设计，并且在位移小于游隙的一半的情况下具有合理的精度。动力系数也可以用来预测旋涡的开始。通过对旋转和非旋转载荷情况的应用，说明了结果的正确性。结果表明，由于CSq=λHd/(πN)，同心条件下的挤压阻尼常数可以通过水动力刚度的稳态加载试验获得。有人认为，这一关系可以推广到所有类型的轴承，能够在任何速度下表现出半速旋转。
Coefficients are presented for hydrostatic stiffness, hydrodynamic stiffness and squeeze damping for capillary, orifice and constant flow control. Due to the linear behaviour of such bearings these coefficients may be used for conservative design and with reasonable accuracy where the displacements are less than half the clearance. The dynamic coefficients may also be employed to predict the onset of whirl. The results are illustrated by application to rotating and non-rotating load situations. It is demonstrated that the squeeze damping constant for the concentric condition may be obtained from a steady loading test for hydrodynamic stiffness since Csq = λhd /(πN). It is argued that this relationship may be generalised for all types of bearings capable of exhibiting half-speed whirl operating at any speed.