Dynamics of an Electromechanical Touchdown Bearing Mechanism

Authors

  • Janne E. Heikkinen Department of Mechanical Engineering Lappeenranta University of Technology, Lappeenranta, FI-53850, Finland
  • Henri Kauppila Department of Mechanical Engineering Lappeenranta University of Technology, Lappeenranta, FI-53850, Finland
  • Alexander Smirnov VTT Technical Research Centre of Finland, Espoo, FI-02044, Finland
  • Teemu Sillanpää Department of Electrical Engineering Lappeenranta University of Technology, Lappeenranta, FI-53850, Finland
  • Eerik Sikanen Department of Mechanical Engineering Lappeenranta University of Technology, Lappeenranta, FI-53850, Finland
  • Jussi Sopanen Department of Mechanical Engineering Lappeenranta University of Technology, Lappeenranta, FI-53850, Finland

Keywords:

Electromechanical system, mechanism, multibody dynamics, multidisciplinary simulation, safety bearings

Abstract

Safety bearings are used as a back-up system for the rotor-systems that use active magnet bearings for supporting the rotor. When the control fails due to unexpected events, the rotor drops on the safety bearings that prevent further damages of the system. This paper presents dynamic studies of a novel electromechanical safety bearing solution. The parts of the studied system are modeled as rigid bodies and the purpose is the study the dynamics of a real system in means of simulation. The safety bearing mechanism is manufactured and measured in the laboratory environment. The study shows that the dynamic behavior of the system can be repeated using the simulation tools that combines mechanical description of the system, electromagnetics and control system. Also, the electromechanical safety bearing solution seems to be feasible from the dynamic perspective.

Downloads

Download data is not yet available.

References

T. Ishii and R. G. Kirk, “Transient response technique applied to active magnetic bearing machinery during rotor drop,” J. Vib. Acoust, vol. 118, no. 2 pp. 154-163, 1996.

N. Neisi, E. Sikanen, J. Heikkinen, and J. Sopanen, “Effect of off-sized balls on contact stresses in a touchdown bearing,” Trib. Int., vol. 120, pp. 340- 349, 2018.

I. Cade, M. N. Sahinkaya, C. Burrows, and P. S. Keogh, “On the design of an active auxiliary bearing for rotor/magnetic bearing systems,” 11th International Symposium on Magnetic Bearings, Nara, Japan, Aug. 2008.

L. Ginzinger and H. Ulbrich, “Control of a rubbing rotor using an active auxiliary bearing,” J. Mech. Sci. Technol., vol. 21, no. 6, pp. 851-854, 2007.

J. Jiang, H. Ulbrich, and A. Chavez, “Improvement of rotor performance under rubbing conditions through active auxiliary bearing,” Int. J. Nonlinear Mech., vol. 41, no. 8, pp. 949-957, 2006.

A. A. Shabana, Dynamics of Multibody Systems. Cambridge University Press, 2005.

J. Heikkinen, R. S. Semken, O. Pyrhönen, J. Sopanen, and A. Smirnov, “A controllable bearing system,” Patent WO2016139389 A1, 2016.

Downloads

Published

2019-04-01

How to Cite

[1]
Janne E. Heikkinen, Henri Kauppila, Alexander Smirnov, Teemu Sillanpää, Eerik Sikanen, and Jussi Sopanen, “Dynamics of an Electromechanical Touchdown Bearing Mechanism”, ACES Journal, vol. 34, no. 04, pp. 535–540, Apr. 2019.

Issue

2019: Vol 34 Iss 4

Section

Articles