DOI QR코드

DOI QR Code

The Effects of the Stiffness Mistuning and the Excitation Force Phase Difference on the Vibration Localization of Cyclic Structures

순환 구조물의 진동 국부화에 미치는 강성 불균일 및 가진력 위상차의 효과

  • 강민규 (The University of Texas at Austin 대학원) ;
  • 유홍희 (한양대학교 기계공학부)
  • Published : 2003.08.01

Abstract

In periodic cyclic structures, small property irregularity of their substructured often causes significant difference in their dynamic responses, which results in unpredicted premature failures. The small irregularity and the resulting phenomenon are called the mistuning and the vibration localization, respectively. In this paper a simple coupled multi-pendulum system is employed to investigate the effects of the stiffness mistuning and the phase difference in excitation force on the vibration localization of periodic cyclic structures.

Keywords

Stiffness Mistuning;Excitation Force Phase Difference;Vibration Localization;Cyclic Structure;Multi-pendulum System

References

  1. Happawana, G. S., Nwokah, O. D. I., Bajaj, A. K., Azene, M., 1998, 'Free and Forced Response of Mistuned Linear Cyclic Systerms: A Singular Perturbation Approach,' Journal of Sound and Vibration, Vol. 211, pp. 761-789 https://doi.org/10.1006/jsvi.1997.1349
  2. Castanier, P., and Pierre, C., 1997, 'A Reduced Order Modeling Technique for Mistuned Bladed Disks,' Journal of Vibration and Acoustics, Vol. 119, pp. 439-447 https://doi.org/10.1115/1.2889743
  3. Kim, J., Yoo, H., and Inman, D., 2003, 'Vibration Localization of Mistuned Cyclic Structures Undertaking External Harmonic Force,' Journal of Sound and Vibration, Vol. 261, pp. 859-870 https://doi.org/10.1016/S0022-460X(02)00997-5
  4. Wei, S. T., and Pierre, C., 1988, 'Localization Phenomena in Mistuned Assemblies with Cyclic Symmetry [Part I] Free vibrations, [Part II] Forced Vibrations,' Journal of Vibration, Acoustics, Stress, and Reliability in Design, Vol. 110, pp. 429-449 https://doi.org/10.1115/1.3269547
  5. Castanier, P., and Pierre, C., 1997, 'Consideration on the Benefits of Intentional Blade Mistuning for the Forced Response of Turbomachinery Rotors,' Analysis and Disign Issues for Modern Aerospace Vehicles, Vol. 55, pp. 419-425
  6. Ewins, D. J., 1973, 'Vibration Characteristics of Bladed Disk Assemblies,' Journal of Mechanical Engineering Science, Vol. 15, pp. 165-186 https://doi.org/10.1243/JMES_JOUR_1973_015_032_02
  7. Ewins, D. J., 1969, 'The Effect of Detuning upon the Forced Vibrations of Bladed Disks,' Journal of Sound and Vibration, Vol. 9, pp. 65-79 https://doi.org/10.1016/0022-460X(69)90264-8
  8. Pierre, C., and Dowell, E. H., 1987, 'Localization of Vibrations by Structural Irregularity,' Journal of Sound and Vibration, Vol. 114, pp. 549-564 https://doi.org/10.1016/S0022-460X(87)80023-8
  9. Afolabi, D., 1985, 'The Frequency Response of Mistuned Bladed Disk Assemblies,' Vibration of Blades and Bladed Disk Assemblies, Proceedings of Tenth Biennial Conference on Mechanical Vibration and Noise, Cincinnati, Ohio, USA.
  10. Griffin, J. H., and Hoosac, T. M., 1984, 'Model Development and Statistical Investigation of Turbine Blade Mistuning,' Journal of Vibration, Acoustics, Stress, and Reliability in Design, Vol. 106, pp. 204-210 https://doi.org/10.1115/1.3269170
  11. Ewins, D. J., 1970, 'A Study of Resonance Coincidence in Bladed Disks,' Journal of Mechanical Engineering Science, Vol. 12, pp. 305-312 https://doi.org/10.1243/JMES_JOUR_1970_012_055_02