Numerical modelling and analysis of hydrostatic thrust air bearings for high loading capacities and low air consumption

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The paper presents a numerical simulation study on hydrostatic thrust air bearings to assess the load capacity, compressed air consumptions, and the dynamic response. Finite Difference Method (FDM) and Finite Volume Method (FVM) are combined to solve the non-linear Reynolds equation to find the pressure distribution of the air bearing gas film and the total loading capacity of the bearing. The influence of design parameters on air film gap characteristics, including the air film thickness, supplied pressure, depth of the groove and external load, are investigated based on the proposed FDM model. The simulation results show that the thrust air bearings with a groove have a higher load capacity and air consumption than without a groove, and the load capacity and air consumption both increase with the depth of the groove. Bearings without the groove are better damped than those with the grooves, and the stability of thrust bearing decreases when the groove depth increases. The stability of the thrust bearings is also affected by their loading.


Original languageEnglish
Article number012005
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 20 Dec 2017
Event3rd International Conference on Mechanical Engineering and Automation Science, ICMEAS 2017 - University of Birmingham, Birmingham, United Kingdom
Duration: 13 Oct 201715 Oct 2017