Tuning a Wine Glass via Material Tailoring — An Application of a Method for Optimal Acoustic Design

Koopmann, Gary H.; Belegundu, Ashok D.

doi:10.1006/jsvi.2000.3215

Cited by 10 publications

(2 citation statements)

References 24 publications

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“…In this section, we give simple theoretical considerations meant to clarify the role of the liquid in the pitch lowering. This theory dates back to Lord Rayleigh [5] and has been applied successfully to filled wine glasses [1][2][3] as well as other problems involving filled or immersed tanks [6][7][8].…”

Section: Theoretical Developmentsmentioning

confidence: 99%

Tuning the pitch of a wine glass by playing with the liquid inside

2008

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It is well known that the pitch of the sound produced by an excited glass shell can be tuned by adding some liquid in it. In this paper, it will be proved that the distribution of the liquid inside the shell plays a crucial role in this frequency shift. Thus it provides another way to tune the pitch of the sound by modifying the liquid distribution inside the glass. Both adding a cylinder in the liquid or rotating it results in a pitch lowering. A simple model based on energy conservation is in good agreement with the measured experimental results. This paper assumes some basic knowledge about mechanics and hydrodynamics. It addresses instructors of physics at the undergraduate and advanced secondary school level as well as their students.

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Section: Theoretical Developmentsmentioning

confidence: 99%

Tuning the pitch of a wine glass by playing with the liquid inside

2008

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“…The method utilizes the linearized Euler equations and dipole matrix composed by point sound sources to solve the singularity of integral equations in the boundary element method. And then Fahnline and Constans [25][26][27][28] used this method to deal with structural noise control such as the piezoelectric control of structural noise, structural tailor and sound power optimization. It could draw a conclusion from these works that the wave superposition method not only could be used to Please cite this article as: Q. Zhou, & D. Wang, Vibro-acoustic coupling dynamics of a finite cylindrical shell under a rotorbearing-foundation system's nonlinear vibration excitation, Journal of Sound and Vibration (2015), http://dx.doi.org/10.1016/ j.jsv.2015.02.040i reconstruct the acoustic field, but also could be used to the structural acoustic design and optimization.…”

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confidence: 99%