Experimental measurement of precision bearing dynamic stiffness

E. R. Marsh, D. S. Yantek

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


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
Issue number1
StatePublished - Apr 24 1997

All Science Journal Classification (ASJC) codes

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


Dive into the research topics of 'Experimental measurement of precision bearing dynamic stiffness'. Together they form a unique fingerprint.

Cite this