Root iterative method for static performance analysis of aerostatic thrust bearings with multiple pocketed orifice-type restrictors based on ANSYS
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 1 October 2019
Issue publication date: 14 January 2020
Abstract
Purpose
The purpose of this paper is to present a novel numerical approach to analyze the static performance of aerostatic thrust bearings by adopting a general finite element method calculation program.
Design/methodology/approach
The characteristics of a gas film are described by the Reynolds equation and the pressure distribution is solved using the finite element method. A root iterative method is proposed to meet the requirement of the mass-conservation law because multiple pocketed orifice-type restrictors are treated as a series of special boundary conditions.
Findings
The static performance of a rotary table using aerostatic thrust bearings, including load carrying capacity and stiffness, can be predicted by the method; moreover, it can be further confirmed through experiments on the designed rotary table.
Originality/value
The method combining the finite element and root iterative methods is highly accurate and has a low time-cost for analyzing aerostatic thrust bearings with multiple pocketed orifice-type restrictors.
Keywords
Acknowledgements
The research is supported by National Science and Technology Major Project of High-end CNC Machine Tools and Basic Manufacturing Equipment of China (grant number 2011ZX04004–021).
Citation
Wu, Y., Qiao, Z., Xue, J., Liu, Y. and Wang, B. (2020), "Root iterative method for static performance analysis of aerostatic thrust bearings with multiple pocketed orifice-type restrictors based on ANSYS", Industrial Lubrication and Tribology, Vol. 72 No. 1, pp. 165-171. https://doi.org/10.1108/ILT-11-2018-0429
Publisher
:Emerald Publishing Limited
Copyright © 2019, Emerald Publishing Limited