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2 Vibrations in Physical Systems

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Shell-solid FEM model of a violin resonance body

Kabała Andrzej, Barczewski Roman

Vibrations in Physical Systems

2020

Vol. 31, nr 3

art. no. 2020308

The FEM model of a violin resonance body presented in the article has been developed in order to simulate various issues in the field of violin dynamics and vibro-acoustics. All violin parts participating in the vibrations of the resonance body (solid and shell parts) are included in the model. Material properties and material orientation (anisotropy) of wood species used to make the violin parts have been taken into account in the model. Properties of spruce have been applied to the top plate (with f-holes) and solid parts. Properties of maple have been applied to the back plate, ribs and bridge. Two basic problems were considered: simulation and analysis of violin body vibrations in the cases of natural vibrations (*Frequency) and forced vibrations - excided by strings (*Steady-state dynamics). The results of simulations have been described and illustrated.

Violin bridge vibrations - FEM

Kabała A., Niewczyk B., Gapiński B.

Vibrations in Physical Systems

2018

Vol. 29

art. no. 2018021

Violin bridge transmits vibration of the strings on the violin body. In numerous publications, the feet of the bridge are often glued to a rigid surface. In this paper the authors present a model of the bridge based on springs. The movement of the top of the bridge is partially limited by the violin strings. This movement limitation is modelled as an additional spring. Furthermore, it is possible to introduce a model of sound post. The material of the bridge (maple) is modelled as anisotropic.