Numerical investigation of rotor-bearing vibrations with tilted externally pressurized air lubricated bearing


Dal A., KARAÇAY T.

5th International Conference on Mechatronics and Control Engineering, ICMCE 2016, Venice, Italy, 14 - 17 December 2016, pp.37-41 identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1145/3036932.3036938
  • City: Venice
  • Country: Italy
  • Page Numbers: pp.37-41
  • Keywords: Externally pressurized air lubricated bearing, Rotor dynamics, Tilting effect
  • Gazi University Affiliated: Yes

Abstract

© 2016 ACM.In this study, vibrations of a rotor-bearing system supported by tilted air bearing are numerically investigated. Air flow between rotor and bearing surfaces is modelled using Reynold's equation with an introduced new clearance function for tilted air bearing. In order to calculate air film forces, Reynold's equation is solved using Differential Transform and Finite Difference hybrid numerical solution method. Dynamic motions of the rotor-bearing system supported by air bearings are modelled with air film forces in four degrees-of-freedom. In order to investigate effects of the bearing tilt on the vibrations of the rotor, one of the air bearing is modelled with a certain amount of tilt angle and the model is simulated for different rotor angular speeds.