Summary

Proceedings of the 2013 International Symposium on Nonlinear Theory and its Applications

2013

Session Number:A1L-D

Session:

Number:22

Nonlinear Rotor Response with Coupled Lateral and Torsional Motions

Nicholas Vlajic,  Hamad Karki,  Balakumar Balachandran,  

pp.22-25

Publication Date:

Online ISSN:2188-5079

DOI:10.15248/proc.2.22

PDF download (708.8KB)

In previous work of the authors, experimental response data for a slender rotor system with gyroscopically coupled lateral and torsional motions were presented along with a computational model that was used to predict and explain phenomena observed in the experiments. Here, the authors expand upon this work, develop a reduced-order system to study the system torsion dynamics in the presence of continuous rotor-stator contact, and carry out analysis to develop insights into the origins of the frequency-response components observed in the experiments and simulations.

[1] T. Yamamoto and Y. Ishida, “Linear and nonlinear rotordynamics,” John Wiley & Sons, Inc., 2001.

[2] N. Vlajic, X. Liu, H. Karki, and B. Balachandran, “Rotor torsion vibrations in the presence of continuous stator contact,” ASME IMECE, Paper IMECE2012-89195, 2012.

[3] N. Vlajic, X. Liu, H. Karki, and B. Balachandran, “Torsion oscillations of a rotor with continuous stator contact,” Intl. J. of Mechanical Sciences, to be submitted.

[4] H. Diangui, “Characteristics of torsional vibrations of rotor-to-stator rub in turbormachinery,” Tribology International, vol.33, pp.75-79, 2000.