Experimental measurement of precision bearing dynamic stiffness

Eric Russell Marsh, D. S. Yantek

    Research output: Contribution to journalArticle

    20 Citations (Scopus)

    Abstract

    Static stiffness measurement of precision bearing components by influence coefficients is complicated by the task of loading and measuring the baseline test fixture stiffness before including the bearing components. Furthermore, as the displacement of the bearing system is measured for various load conditions, the stiffness of high quality bearings may be difficult to distinguish from the test fixture stiffness. The common occurrence of inaccurate stiffness measurements has motivated this investigation of an experimental method based on frequency response function measurements. In this work the traditional static measurement that requires careful attachment and modelling of the test fixture to "ground" is abandoned and replaced by dynamic measurements taken from a test fixture with free boundary conditions. A complete dynamic characterization of the test fixture is shown to be unnecessary; the only measurements required are the frequency response functions at the points of attachment to the bearing components. An investigation into the effects of common measurement errors such as sensor calibration and location is also included, with an example of the proposed method.

    Original languageEnglish (US)
    Pages (from-to)55-66
    Number of pages12
    JournalJournal of Sound and Vibration
    Volume202
    Issue number1
    DOIs
    StatePublished - Apr 24 1997

    Fingerprint

    Bearings (structural)
    stiffness
    fixtures
    Stiffness
    Frequency response
    frequency response
    attachment
    influence coefficient
    Measurement errors
    free boundaries
    Loads (forces)
    Boundary conditions
    Calibration
    Sensors
    occurrences
    boundary conditions

    All Science Journal Classification (ASJC) codes

    • Condensed Matter Physics
    • Acoustics and Ultrasonics
    • Mechanics of Materials
    • Mechanical Engineering

    Cite this

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    Experimental measurement of precision bearing dynamic stiffness. / Marsh, Eric Russell; Yantek, D. S.

    In: Journal of Sound and Vibration, Vol. 202, No. 1, 24.04.1997, p. 55-66.

    Research output: Contribution to journalArticle

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