A component level test rig for dynamic characterization of oil lubricated bearings using different input excitations Conference Paper uri icon


  • The following paper describes a test rig facility for characterizing the dynamic performance of oil-lubricated bearings and investigates the use of different parameter identification methods on a single tilting pad journal bearing. The test rig is capable of spinning up to 20,000 rpm and can accommodate bearings up to 110 mm in diameter. It is the intent of the present study to compare asynchronous rotordynamic force coefficients calculated using three different controlled motion forced vibration impedance tests, which are: 1) single frequency linear excitation, 2) pseudorandom linear excitation, and 3) dual orbit excitations. The excitations are imposed through the bearing housing while measuring dynamic forces, accelerations and relative motions. Experiments are conducted at 7,500 rpm with a frequency range between 20-252 Hz. Results between the three approaches show good agreement for the test bearing in question. Copyright © 2010 by ISROMAC.

author list (cited authors)

  • Delgado, A., Ertas, B., Drexel, M., Vannini, G., & Naldi, L.

publication date

  • December 2010