Vibration-based estimation of beam boundary parameters

Michael Blom Hermansen, Jon Juel Thomsen*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Two methods are suggested for using measured vibrations to estimate linear boundary stiffness and damping for beams, while simultaneously estimating axial tension. Estimation is performed by fitting model boundary parameters to measured modal vibration data. The methods are validated using simulated and experimental data, and shown to be accurate when boundary parameters are not extreme, i.e. representing either zero stiffness or compliance.

Original languageEnglish
JournalJournal of Sound and Vibration
Volume429
Pages (from-to)287-304
ISSN0022-460X
DOIs
Publication statusPublished - 2018

Keywords

  • Beam theory
  • Boundary conditions
  • Estimation
  • Nonlinear regression
  • Rayleigh's quotient
  • Tension

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