Investigations in Hydrostatic Planar Bearings Compensated by Tapered-Spool Restrictors I: Flow Rate

Abstract

This paper is former part of serial studies to investigate the influence of design parameters of taperedspool type restrictors on static characteristics of hydrostatic bearing. The flow rates passing restrictors can determine the static characteristics of hydrostatic bearings. In this part an analytical method which includes formulas and solving is utilized to simulate dimensionless flow rate in both single-action and double-action tapered-spool restrictors. The numerical results illustrate the variations of flow rates with respect to the change of pressure and pressure difference, respectively. The findings give that the design parameters of tapered-spool restrictors and the useful range of recess pressure. The following part will depend on this paper results to study load capacity and static stiffness of hydrostatic bearing compensated by tapered-spool restrictor.

Investigations in Hydrostatic Planar Bearings Compensated by Tapered-Spool Restrictors II: Load Capacity and Static Stiffness

“…These design parameters and dimensionless parameters have been defined and described by Kang et al [8].…”

Fluid-structure coupling model and output characteristics of a diaphragm-type restrictor

“…[4][5][6] However, it is difficult for the classical fixed orifice restrictor to adjust the geometrical structure according to the variation of external conditions, resulting in poor gas film stability. On this basis, variable restrictors, including diaphragm-type and spool-type restrictor, [7][8][9] are proposed for making up this shortcoming and obtaining relatively large gas film stiffness. 10,11 Many scholars have conducted a lot of research on diaphragm-type restrictor.…”