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Call for Paper - December – 2022 Edition   

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IJATCA solicits original research papers for the December – 2022 Edition.
Last date of manuscript submission is December 30, 2022.

                                                   

Parametric Study of Aerostatic Bearing Performance Analysis with CFD Validation


Volume: 1 Issue: 1
Year of Publication: 2019
Authors: Ayan Sarkar, Santanu Sarkar, Nripen Mondal



Abstract

Aerostatic bearing is used in the recent times for the high precision applications like moment of inertia (MOI) measurement system, coordinate position measuring machine (CMM), dentist pneumatic drill, high speed train etc. The advantages of the aerostatic bearing application is it provide friction free movement between the static and rotating part and is also cleaner in the operation system compare to the conventional ball and oil bearing. The present study of this aerostatic bearing design has been considered with a centrally feeded air hole which is connected through an external compressor. The total supported load acts coaxially on the bearing rotor. The inlet mass flow rate goes vertical air-hole then radial gap between the bearing stator and rotor towards the atmosphere. The typical stator design has two circular pockets, one is at the centre of the stator and another just before the outlet. The objective of the present investigation is the parametric study of a stable bearing design which supports a heavy payload. The air bearing design modelling is achieved by the numerical analysis in the Matlab -Simulink platform. The parametric study involved the different pressure supply with force capability, bearing stiffness, pressure profile at the gap etc. The Matlab developed numerical results is validated through the CFD analysis in Ansys Fluent-16 which matches well with the analytical obtain results.

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Keywords

air bearing capacity, stiffness, analytical analysis, CFD validation.




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