Abstract
Nonlinear dynamics and stability of the rotor–bearing–seal system are investigated both theoretically and experimentally. An experimental rotor–bearing–seal device is designed and corresponding tests are carried out. The experimental rotor system is simplified as the Jeffcott rotor. The nonlinear oil–film forces are obtained under the short bearing theory and Muszynska nonlinear seal force model is used. Numerical method is utilized to solve the nonlinear governing equations. Bifurcation diagrams, waterfall plots, Poincaré maps, spectrum plots and rotor orbits are drawn to analyze various nonlinear phenomena and system unstable processes. Theoretical results from numerical analysis are in good agreement with results from experiments. Conclusions are drawn and prove that this study will contribute to the further understanding of nonlinear dynamics and stability of the rotor system with the fluid-induced forces from oil–film bearings and the seals.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Kwanka, K.: Improving the stability of labyrinth gas seals. J. Eng. Gas Turbines Power 123, 383–387 (2001)
Eser, D.: Rotordynamic coefficients in stepped labyrinth seals. Comput. Method. Appl. Mech. Eng. 191, 3127–3135 (2002)
Ding, Q.: Hopf bifurcation analysis of a rotor/seal system. J. Sound Vib. 252(2), 817–833 (2002)
Chen, Y.S., Ding, Q., Hou, S.J.: A study on the Stability and Hopf bifurcation of nonlinear rotor–seal system. J. Vib. Eng. 10, 368–374 (1997)
Hua, J., Swaddiwudhipong, S., Liu, Z.S., Xu, Q.Y.: Numerical analysis of nonlinear rotor–seal system. J. Sound Vib. 283, 525–542 (2005)
Ei-Marpomy, A.A.: Stability analysis of rotor–bearing systems via Routh–Hurwitz criterion. Appl. Energy 77, 287–308 (2004)
Tiwari, R., Lees, A.W., Frisell, M.I.: Identification of speed-dependent bearing parameters. J. Sound Vib. 254(5), 967–986 (2002)
Sundarajan, P., Noah, S.T.: An algorithm for response and stability of large order nonlinear systems-application to rotor system. J. Sound Vib. 214(4), 695–723 (1998)
Jianping, J., Guang, M.: On the non-linear dynamic behavior of a rotor–bearing system. J. Sound Vib. 274, 1031–1044 (2004)
Serra Villa, C.V., Sinou, J.-J.: The invariant manifold approach applied to nonlinear dynamics of a rotor–bearing system. Eur. J. Mech. A/Solids 24, 676–689 (2005)
Songtal, L., Qingyu, X.: Nonlinear dynamic behaviors of a rotor-labyrinth seal system. Nonlinear Dyn. 47, 321–329 (2007)
Adiletta, G., Guido, A.R., Ross, C.: Chaotic motions of a rigid rotor in short journal bearings. Nonlinear Dyn. 10(6), 251–269 (1996)
Muszynska, A., Bently, D.E.: Frequency-swept rotating input perturbation techniques and identification of the fluid force models in rotor/bearing/seal systems and fluid handling machines. J. Sound Vib. 143(1), 103–124 (1990)
Muszynska, A.: Improvements in lightly loaded rotor/bearing and rotor/seal models. Trans. Am. Soc. Mech. Eng. J. Vib. Acoust. Stress Reliab. Des. 110, 443–462 (1988)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Shen, X., Jia, J., Zhao, M. et al. Experimental and numerical analysis of nonlinear dynamics of rotor–bearing–seal system. Nonlinear Dyn 53, 31–44 (2008). https://doi.org/10.1007/s11071-007-9293-3
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11071-007-9293-3