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A non-smooth simulation of the dynamics of the grand piano action

Anders Thorin 1 Xavier Boutillon 1 Xavier Merlhiot 2 José Lozada 3
2 LSI - Laboratoire Simulation Interactive
DIASI - Département Intelligence Ambiante et Systèmes Interactifs : DRT/LIST/DIASI
3 LIS - Laboratoire Interfaces Sensorielles
DIASI - Département Intelligence Ambiante et Systèmes Interactifs : DRT/LIST/DIASI
Abstract : Two models of the grand piano key mechanism are presented: a single-degree-of-freedom model and a model based on 6 rotating bodies, 13 contact zones with nonlinear springs, 3 of them (hammer-jack, jack-escapement button, hammer-check) being also subject to Coulomb friction. The latter model introduces discontinuities on the velocities. The problems raised by the usual regular-dynamics formulation are discussed and a non-smooth dynamics approach is proposed. Based on the comparison between experimental and simulation results, it is discussed whether the simulation should be driven by the force exerted by the pianist or by the displacement of the key.
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https://hal.archives-ouvertes.fr/hal-00817781
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Submitted on : Thursday, April 25, 2013 - 2:49:38 PM
Last modification on : Tuesday, February 11, 2020 - 1:33:02 AM
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  • HAL Id : hal-00817781, version 1

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Anders Thorin, Xavier Boutillon, Xavier Merlhiot, José Lozada. A non-smooth simulation of the dynamics of the grand piano action. Waves 2013, Jun 2013, Tunis, Tunisia. ⟨hal-00817781⟩

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