Volume 3, 2019
|Number of page(s)||8|
|Published online||23 August 2019|
Sound of a nut rolling inside an elastic rubber balloon
91128 Palaiseau Cedex, France
2 LadHyX, UMR 7646 du CNRS, Ecole Polytechnique, 91128 Palaiseau Cedex, France
Accepted: 14 June 2019
This article studies the sound produced by nuts of different shapes swirling in an elastic rubber balloon. First, the sound is studied experimentally, both in terms of frequency and amplitude. Regarding the frequency components of the sound, we show that they can be divided into two main contributions – one due to the oscillations of the elastic membrane, the other due to the hits of the nut against the balloon – and present models to describe the frequency’s dependence on the main parameters of the system. We analysed the influence of several parameters such as the balloon’s geometry, the nut’s geometry and its mass.
© A. Barral et al., Published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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