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Communication Dans Un Congrès Année : 2023

Developing a finite element model for the study of an experimental batch of violins

Amaury Meza-Perez
  • Fonction : Auteur
  • PersonId : 1310882
Sebastian Gonzalez
  • Fonction : Auteur
  • PersonId : 1310883
Claudia Fritz

Résumé

During the Bilbao project, six violins were carefully built in order to investigate the influence of the plate thickness on the dynamics, sound and playing characteristics of the complete instruments. To this end, three violins with medium sized backs, each paired with a thin, normal, or thick top and three with medium tops, each paired with a thin, medium, or thick back. Despite careful control and reduction of the influence of handwork by CNC cutting the outside of the plates, there are various sources of variations among the parts, in particular in the wood properties. In order to separate the effect of the intentional thickness variations from irreducible natural variability in wood properties and geometric tolerance, a complete finite element model is being developed using COMSOL software. This model takes into account the geometry of the Bilbao project violins while the wood properties are obtained by optimising the numerical vibratory behavior to match the experimental modal data of the free plates, just after they were CNC routed. This model will then be used to quantify the respective effects of random variations on the vibratory behavior, which could be very useful for violin makers who work by hand with a highly variable material.
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Dates et versions

hal-04292474 , version 1 (17-11-2023)

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  • HAL Id : hal-04292474 , version 1

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Amaury Meza-Perez, Sebastian Gonzalez, Romain Viala, Claudia Fritz. Developing a finite element model for the study of an experimental batch of violins. Forum Acusticum 2023, Sep 2023, Turin, Italy. pp.752. ⟨hal-04292474⟩
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