Identifying Coulomb and viscous friction in forced dual-damped oscillators

Jin Wei Liang*, Brian F. Feeny

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

33 Scopus citations

Abstract

This paper presents a method for estimating Coulomb and viscous friction coefficients from responses of a harmonically excited dual-damped oscillator with linear stiffness. The identification method is based on existing analytical solutions of non-sticking responses excited near resonance. The method is applicable if the damping ratio of viscous component can be considered small. The Coulomb and viscous friction parameters can be extracted from two or more input-output amplitude pairs at resonance. The method is tested numerically and experimentally. Experimental results are cross checked with estimations from free-vibration decrements and also from friction measurements.

Original languageEnglish
Pages (from-to)118-125
Number of pages8
JournalJournal of Vibration and Acoustics
Volume126
Issue number1
DOIs
StatePublished - 01 2004
Externally publishedYes

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