Physical modelling techniques for the dynamical characterization and sound synthesis of historical bells

Carvalho, Miguel Eduardo Portela de Matos; Debut, Vincent; Antunes, José

doi:10.1186/s40494-021-00620-2

Cited by 3 publications

(1 citation statement)

References 37 publications

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“…Furthermore, the findings of this research that highlight the importance of the accurate geometrical characteristics to the vibrational behavior of the instrument hold significant importance in advancing the creation of accurate numerical models for vibroacoustic simulations and synthesizing the sound of cymbals. Such CAD-FEM models are nowadays used in sound emission modeling and simulation studies [7,24,25]. However, achieving a high level of agreement between the recorded and simulated sounds is still challenging, primarily attributed to the intricate nonlinear behavior exhibited by cymbals and the accuracy of the CAD-FEM geometrical parameters.…”

Section: Introductionmentioning

confidence: 99%

Vibrational Analysis of a Splash Cymbal by Experimental Measurements and Parametric CAD-FEM Simulations

Brezas,

Kaselouris,

Orphanos

et al. 2024

Vibration

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The present study encompasses a thorough analysis of the vibrations in a splash musical cymbal. The analysis is performed using a hybrid methodology that combines experimental measurements with parametric computer-aided design and finite element method simulations. Experimental measurements, including electronic speckle pattern interferometry, and impulse response measurements are conducted. The interferometric measurements are used as a reference for the evaluation of finite element method modal analysis results. The modal damping ratio is calculated via the impulse response measurements and is adopted by the corresponding simulations. Two different approximations are employed for the computer-aided design and finite element method models: one using three-point arcs and the other using lines to describe the non-smooth curvature introduced during manufacturing finishing procedures. The numerical models employing the latter approximation exhibit better agreement with experimental results. The numerical results demonstrate that the cymbal geometrical characteristics, such as the non-smooth curvature and thickness, greatly affect the vibrational behavior of the percussion instrument. These results are of valuable importance for the development of vibroacoustic numerical models that will accurately simulate the sound synthesis of cymbals.

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Section: Introductionmentioning

confidence: 99%

Vibrational Analysis of a Splash Cymbal by Experimental Measurements and Parametric CAD-FEM Simulations

Brezas,

Kaselouris,

Orphanos

et al. 2024

Vibration

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3D digital technologies applied to the design and printing of auxiliary structures for fragment adhesion strategies on wax artifacts

et al. 2022

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Three-dimensional models of anatomy in wax preserved in university museums are rare artifacts of extraordinary technical complexity. In recent years, interest in them has increased among scholars who consider them primary sources of heritage value to approach material culture and the history of science. The fragility of the sculptural material and the inadequate exhibition and storage conditions of many of these collections have caused the formation of pathologies whose conservation treatment is a great challenge for the restorer. In this regard, new 3D digital technologies have created a great impact on the documentation and analysis of interventions in the field of conservation and restoration of cultural heritage. This research aims to demonstrate the technical possibilities offered by 3D digital systems as support tools in curative conservation strategies to mechanically stabilize fragmented sculptural parts. For this case study, we chose an 18th-century obstetric anatomical model made by the Madrid Court sculptor Juan Cháez, and the modeler Luigi Franceschi who belonged to the anatomical cabinet of the Royal College of Surgery of San Carlos in Madrid. In this work, we demonstrate the digitization process carried out employing structured light scanners, digital modeling, and 3D printing. The aim is to create auxiliary structures suitable to support the various original pieces to be adhered while guaranteeing their exact position during the adhesive curing process as well as the volumetric reintegration of faults. In addition tensile and three point bending tests for the mechanical characterization of the selected thermoplastic impression materials are described. Finally, the qualities considered suitable for the most appropriate material for the purpose of the study are detailed. Promising results were obtained since the structures have made it possible to perform fragment adhesions in highly complex areas of the sculpture, ensuring maximum precision, safety, and efficiency during the process.

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A practical hybrid approach to the problem of surveying a working historical bell considering innovative measurement methods

Skrzypczak¹,

Oleniacz²,

Leśniak³

et al. 2023

Herit Sci

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The article proposes using a novel hybrid measurement method, with expected precision results, to determine the characteristic of the historic, 17th-century bell. In an interdisciplinary approach, modern and non-invasive physical and chemical measurement methods were used. Based on the monitoring (measurements and laser scanning), a three-dimensional geometric model was built to calculate the bell size and analyze its condition depending on material consumption. Next, chemical measures of the bell samples were carried out to determine the material properties. For that purpose, advanced precision microscopic techniques were used. Based on the geometric model and chemical studies, the material properties and density of the bronze were determined using additive assumptions. Measurement accuracy and data quality were evaluated statistically. The method allows reliably determining the bell's weight without needing to dismantle it or external intervention. The approach is helpful for practitioners performing conservation work on such objects.

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Physical modelling techniques for the dynamical characterization and sound synthesis of historical bells

Cited by 3 publications

References 37 publications

Vibrational Analysis of a Splash Cymbal by Experimental Measurements and Parametric CAD-FEM Simulations

Vibrational Analysis of a Splash Cymbal by Experimental Measurements and Parametric CAD-FEM Simulations

3D digital technologies applied to the design and printing of auxiliary structures for fragment adhesion strategies on wax artifacts

A practical hybrid approach to the problem of surveying a working historical bell considering innovative measurement methods

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