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Dynamic Behaviour of Rotating Machinery

  • Giancarlo Genta

Abstract

The preceding chapters have been devoted to the study of the dynamic behaviour of structures, i.e., of mechanical systems that are stationary with respect to an inertial frame of reference, apart from the vibratory motion that is the object of the study. Many machine elements, however, do not comply with this definition since, owing to their rotational motion, it is not possible to define an inertial system of reference in which the element is stationary.

Keywords

Critical Speed Journal Bearing Spin Speed Gyroscopic Effect Hydrodynamic Bearing 
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Reference

  1. A. Muszynska, Rotor instability, Senior Mechanical Engineering Seminar, Carson City, June, 1984.Google Scholar
  2. See, for example, F.M. Dimentberg, Flexural vibrations of rotating shafts, Butterworths, London, England, 1961.Google Scholar
  3. G. Genta, Whirling of unsymmetrical rotors: A finite element approach based on complex coordinates, J. of Sound and Vibration, 124 (1), (1988), 24–53.ADSGoogle Scholar
  4. For a detailed discussion of the meaning of the negative modal masses, see, for example G. Genta and F. De Bona, Unbalance response of rotors: A modal approach with some extensions to damped natural systems, J. of Sound and Vibrations, 140 (1), (1990), 129–153.CrossRefGoogle Scholar
  5. O. Reynolds, On the theory of lubrication and its applications to mr. Towers’ experiments, Phil. Trans. Soc., London, Vol. 177, (1886), 154–234.Google Scholar
  6. P.C. Warner, Static and dynamic properties of partial journal bearings, J. of Basic Engineering, Trans. ASME, Series D, 85, (1963), 244.Google Scholar
  7. See, as an example, A. Tondl, Some problems in rotor dynamics, Czechoslovak Academy of Sciences, Prague, Czechoslovakia, 1965; and A. Muszynska, Rotor instability, Senior Mechanical Engineering Seminar, Carson City, June, 1984.Google Scholar
  8. F. Ehrich, D. Childs, Self-excited vibration in high performance turbomachinery, Mech. Eng., May, (1984).Google Scholar
  9. As an example, see H. Schneider, Balancing technology, Schenck, Darmstadt, Germany, 1974.Google Scholar
  10. This property holds also if the gyroscopic effect is taken into account, see G. Genta and F. De Bona, Unbalance response of rotors: a modal approach with some extensions to damped natural systems, J. of Sound and Vibration, 140 (1), 1990, 129–153.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1993

Authors and Affiliations

  • Giancarlo Genta
    • 1
  1. 1.Dipartimento di MeccanicaPolitecnico di TorinoTorinoItaly

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