대한기계학회논문집A (Transactions of the Korean Society of Mechanical Engineers A)

  • 제25권4호
  • /
  • Pages.555-563
  • /
  • 2001
  • /
  • 1226-4873(pISSN)
  • /
  • 2288-5226(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
권호 표지
DOI QR코드

DOI QR Code

지지구조물의 동특성을 고려한 회전축 모델의 진동해석

Vibrational Analysis of Rotor Model considering the Dynamic Characteristics of the Support Structure

  • 발행 : 2001.04.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Support dynamics are often important in rotordynamic analyses. It may well happen in real situation of machines such as centrifugal pumps or turbines operating on flexible structure. This paper presents the applications of the impedance coupling method and the improved rotor model for including the support effects on the interaction with the rotor. The impedance coupling techniques are based on the FRFs of each substructure. Its dynamic stiffness matrix can be assembled to generate the system matrix, which satisfy the constraint conditions in the connection coordinates. And, the improved rotor uses the simplified spring-mass models as support properties. The equivalent support models are directly incorporated into the finite element rotor model. To verify the suggested analytical procedures, the results are compared to those of the pump system.

키워드

참고문헌

  1. Sauer, G. and Wolf, M., 1989, 'Finite Element Analysis of Gyroscopic Effects,' Finite Elements in Analysis and Design 5, pp. 131-140 https://doi.org/10.1016/0168-874X(89)90018-8
  2. Kim, D. and David, J. W., 1990, 'An Improved Method for Stability and Damped Critical Speeds of Robot-Bearing Systems,' Trans. ASME, Journal of Vibration and Acoustics, Vol. 112, pp. 112-118
  3. Yang, B. S., Oh, S. K. and Iwatsubo, T., 1986, 'Effects of Annular Seals on the Stability of Centrifugal Pump Rotors,' 대한기계학회논문집 제10권 제1호, pp. 56-61
  4. Vance, J. M., 1987, Rotordynamics of turbomachinery, John Wiley & Sons, Inc., pp. 116-170
  5. Lee, C. W., 1993, Vibration Analysis of Rotors, Kluwer Academic Publishers, London, pp. 151-226
  6. Buckles, J. R. and Rouch, K. E., 1996, 'Modeling Support Effects-Finite Element and Experimental Modal Methods,' ASME 96-GT-403, NY, pp. 1-9
  7. Okitsu, A., Yamashita, K. and Azegami, H., 1987, 'Substructure Synthesis Method with Consideration of Rotational Effects on the Combined Boundary,' 일본기계학회논문집, 제54권 505호, pp. 2059-2064
  8. Hong, S. W. and Park, J. H., 1996, 'On Improved Substructure Synthesis Method for Unbalance Response Analysis of Rotor Bearing Systems,' 한국소음진동공학회지, 제6권 제1호, pp. 71-82
  9. Taiping, H., 1988, 'The Transfer Matrix Impedance Coupling Method for the Eigensolutions of Multi-Spool Rotor Systems,' Trans. ASME, Journal of Vibration, Acoustics, Stress, and Reliability in Design 110, pp. 468-472
  10. Yang, B., 1992, 'Natural Frequencies of Combined Gyroscopic Systems,' Journal of Sound and Vibration 159-2, pp. 23-37 https://doi.org/10.1016/0022-460X(92)90449-8
  11. Suarez, L. E. and Singh, M. P., 1992, 'Modal Synthesis Method for General Dynamic Systems,' Journal of Engineering Mechanics 118-7, pp. 1488-1503
  12. Ewins, D. E., 1986, Modal Testing : Theory and Practice, Research Studies Press LTD., pp. 19-85
  13. Kramer, E., 1993, Dynamics of Rotors and Foundations, Springer-Verlag, pp. 261-313
  14. API standard 610, 1985, 6th Edition