Effect of friction and eccentricity on rebbing phenomenon

회전마멸현상에서의 마찰과 편심의 영향

  • 최연선 (성균관대학교, 기계설계학과) ;
  • 김준모 (성균관대학교, 기계설계학과) ;
  • 정호권 (성균과대학교 대학원)
  • Published : 1996.12.01

Abstract

Nonlinear dynamic characteristics of rubbing phenomenon in rotor dynamics are investigated experimentally and numerically. Rubbing phenomenon occurs when rotor contacts with stator during whirling and causes the large amplitude of vibration, high whirl frequencies, and possibly catastrophic failure. Rubbing has various types of forward whirl, backward rolling, backward slipping, and partial rub depending on the system parameters of rotating machinery and running speed. Experiments are performed for forward whirl and backward whirl. And numerical analysis are conducted to explain the changes between backward rolling and backward slipping. Experimental and numerical results show that the types of whirling motion depends on the friction coefficient between rotor and stator and the eccentricity of rotor.

Keywords

References

  1. J. Mech. Engr. Sci v.10 Interaction of a Whirling Rotor with a Vibrating Stator Across a Clearance Annulus Black, H. F.
  2. ASME Paper 66-WA/MD-8 Stator Whirl with Rotor in Bearing Clearance Erich, F. F.;O'Connor, J. J.
  3. Journal of Vibration, Acoustics, Stress and Reliability in Design v.169 no.3 Nonlinear Steady State Response of a Rotor-Support System Choi, Y.-S.;Noah, S. T.
  4. Proceedings of 12th International Conference on Nonlinear Oscillations, Cracow Backward Whirl Due to Rotor-Stator Contact Crandall, S. H.;Ligener, A.;Zhang, W.
  5. KSME Journal v.8 no.4 Dynamics of Rotor Rub in Annular Clearance with Experimental Evaluation Choi, Y.-S.
  6. Bachelor's Thesis, Dept. of Mechanical Eng., MIT Investigation of Unstable Reverse Whirl Glitzenstein, K. L.
  7. Experimental Investigation of the Dynamic Behavior of a Rotor While in Contact with a Stator Sholmi, R.
  8. 성균관대학교 석사학위 논문 회전체 역학의 Rubbing현상에 관한 연구 정호권
  9. Turbomachinery Rotor-dynamics Childs, D.