Identification of Stiffness and Damping Coefficients of Journal Bearings by Means of the Impact Method

  • R. Nordmann
Part of the International Centre for Mechanical Sciences book series (CISM, volume 273)


It is well knownfrom the preceding chapters, that vibrations of rotors with journal bearings are influenced by the dynamic behaviour of the oil film. Therefore in rotor dynamics investigations oil film characteristics have to be considered. In linear theory the dynamic behaviour of the journal bearings can be described by four stiffness and four damping coefficients. These coefficients can be found either by calculations or by experimental methods.


Frequency Response Function Journal Bearing Rigid Rotor Exciting Force Amplitude Frequency Characteristic 


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  1. [1]
    Lund, J.W.: Evaluation of stiffness and damping coefficients for fluid film bearings. Shock and vibration digest (1978).Google Scholar
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    Glienicke, J.: Feder-und Dämpfungskonstanten von Gleitlagern für Turbomaschinen und deren Einfluß auf das Schwingungsverhalten eines einfachen Rotors. Dissertation TH Karlsruhe, (1966).Google Scholar
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    Mitchell, J.R.; Holmes, R. and von Ballegooyen H.: Experimental determination of a bearing oil film stiffness. Instn. Mech. Engr. Proc. 18/, Pt. 3k, (1965–1966) pp 90–96.Google Scholar

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© Springer-Verlag Wien 1984

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  • R. Nordmann

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