Aerostatic bearings design and analysis with the application to precision engineering: State-of-the-art and future perspectives

Q Gao, W Chen, L Lu, D Huo, K Cheng - Tribology International, 2019 - Elsevier
Aerostatic bearings have been employed as an essential precision engineering element
and enabling technology in numerous applications requiring precision and ultraprecision …

Discharge coefficients of orifice-type restrictor for aerostatic bearings

G Belforte, T Raparelli, V Viktorov, A Trivella - Tribology International, 2007 - Elsevier
The paper describes an experimental study conducted in order to determine the supply hole
discharge coefficients of externally pressurized gas bearings. Tests were carried out on …

Theoretical and experimental investigation on the effect of supply pressure on the nonlinear behaviors of the aerostatic bearing-rotor system

J Zhang, D Han, M Song, Z Xie, Z Rao, D Zou - Mechanical Systems and …, 2021 - Elsevier
With low friction, high rotational speed and low motion error, the aerostatic bearings have
been widely applied to the high speed rotating and high precision machines. However …

CFD analysis of a simple orifice-type feeding system for aerostatic bearings

G Belforte, T Raparelli, A Trivella, V Viktorov… - Tribology Letters, 2015 - Springer
A numerical analysis on the feeding system of externally pressurised gas bearings, for the
correction of the theoretical mass flow rate formula by means of a discharge coefficient, is …

High-speed stability of a rigid rotor supported by aerostatic journal bearings with compound restrictors

Y Otsu, K Somaya, S Yoshimoto - Tribology International, 2011 - Elsevier
Demands for higher rotational speed and accuracy for effective manufacture of small holes
on printed circuit boards and very small precise parts have been increasing remarkably …

Nonlinear behaviors analysis of high-speed rotor system supported by aerostatic bearings

J Zhang, D Han, Z Xie, C Huang, Z Rao, M Song… - Tribology …, 2022 - Elsevier
In the paper, the dynamic model of aerostatic bearing-rotor system combining rotor motion
equation and transient Reynolds equation is established to study influences of rotational …

Numerical simulation of gas-lubricated journal bearings for microfabricated machines

ES Piekos - 2000 - dspace.mit.edu
Numerical simulations of gas-lubricated journal bearings for microfabricated machines are
performed with specialized tools. To maximize flexibility, an orbit method formulation is …

Numerical method and bifurcation analysis of Jeffcott rotor system supported in gas journal bearings

J Zhang, W Kang, Y Liu - 2009 - asmedigitalcollection.asme.org
From the viewpoint of nonlinear dynamics, the stability and bifurcation of the rotor dynamical
system supported in gas bearings are investigated. First, the dynamical model of gas …

An experimental study of high-speed rotor supported by air bearings: test RIG and first experimental results

G Belforte, T Raparelli, V Viktorov, A Trivella… - Tribology …, 2006 - Elsevier
The paper contains the description of the test rig and first experimental data regarding the
mechanical and the thermal behaviour of a 7kg rotor, 460mm long and with a diameter of …

High-speed electrospindle running on air bearings: design and experimental verification

G Belforte, F Colombo, T Raparelli, A Trivella… - Meccanica, 2008 - Springer
In high-speed machining there are a number of applications in which the spindle is
supported by air bearings. This type of bearings has very low friction and wear, resulting in …