Original title: Preliminary identification of damping properties of tonewood
Authors: Povolný, J. ; Kozánek, Jan ; Zapoměl, Jaroslav
Document type: Papers
Conference/Event: DYMAMESI 2019, Cracow (PL), 20190305
Year: 2019
Language: eng
Abstract: Besides elasticity parameters, damping of the material is the crucial parameter of the function of a violin and also of other stringed instruments with a wooden soundboard. Assuming tonewood as an orthotropic linear elastic continuum, our aim is to contribute to hypothesis, that each orthotropic elastic constant has its appropriate loss factor - partial dampings. Dynamic experiments are based on the impulse excitation and the steady state harmonic response is calculated by Fourier transform of time-sampled measured signals (excitation and response). Frequency transfer function fitting identification method can determine complex modal and spectral eigen-parameters, mainly eigenfrequencies and eigendampings.
Keywords: damping; identification of eigenfrequencies and eigendampings; modal analysis; vibrating thin plate; violin
Host item entry: The International Colloquium Dynamics of Machines and Mechanical Systems with Interactions : DYMAMESI 2019, ISBN 978-80-87012-70-3

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0301730

Permalink: http://www.nusl.cz/ntk/nusl-407920


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