Wine glass sound excitation by mechanical coupling to plucked strings

Arbel, Lior; Schechner, Yoav Y.; Amir, Noam

doi:10.1016/j.apacoust.2017.03.016

Cited by 3 publications

(2 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…That the apparent simplicity of wineglasses-examples of fluid-filled shells commonplace in everyday life-hides such interesting physics is incredibly intriguing, and has partially motivated their use in this study. The theoretical analysis of such systems presented here can greatly facilitate the tuning and optimization of the glass harp or related instruments for desired tone and sound quality [32]. On the industrial front, our models may be of general relevance to the evaluation of mechanical performance of engineered shell structures, for instance, vessels for fluid transportation.…”

Section: Resultsmentioning

confidence: 99%

Comprehensive vibrational dynamics of half-open fluid-filled shells

et al. 2019

View full text Add to dashboard Cite

Fluid-filled shells are near-ubiquitous in natural and engineered structures—a familiar example is that of glass harps comprising partially filled wineglasses or glass bowls, whose acoustic properties are readily noticeable. Existing theories modelling the mechanical properties of such systems under vibrational load either vastly simplify shell geometry and oscillatory modal shapes to admit analytical solutions or rely on finite-element black-box computations for general cases, the former yielding poor accuracy and the latter offering limited tractability and physical insight. In the present study, we derive a theoretical framework encompassing elastic shell deformation with structural and viscous dissipation, accommodating arbitrary axisymmetric shell geometries and fluid levels; reductions to closed-form solutions under specific assumptions are shown to be possible. The theory is extensively verified against a range of geometries, fluid levels and fluid viscosities in experiments; an extension of the model encompassing additional solid objects within the fluid-filled shell is also considered and verified. The presented theoretical advance in describing vibrational response is relevant in performance evaluation for engineered structures and quality validation in manufacturing.

show abstract

Section: Resultsmentioning

confidence: 99%

Comprehensive vibrational dynamics of half-open fluid-filled shells

et al. 2019

View full text Add to dashboard Cite

show abstract

“…However, by locally adjusting the thickness (or the mass per unit surface) of a membrane, one may turn tabla drums into harmonic instruments [10]. In the singing wine glasses [11][12][13] as well as in the Tibetan singing bowl [14], sound emission emerges from the coupling between the mechanical resonances of tri-dimensional structures and fluid dynamics. In all cases the frequency of the acoustic emission is determined by the resonant eigenfrequencies of strings, tubes, plates, or tri-dimensional structures -the sound level being frequently amplified through a sound board, a sound box or a bell.…”

mentioning

confidence: 99%

Acoustic emission from successive impacts on elastic membranes: The physics of the screaming balloon

Taberlet¹,

Ferrand²,

Hibat-Allah³

et al. 2019

EPL

View full text Add to dashboard Cite

When a hex nut or a ridged-edge coin, placed inside an inflated rubber balloon and spun vigorously, it emits a surprisingly loud and clear sound as the spinning object impacts the rubber and triggers vibrations of the membrane, a phenomenon known as the screaming balloon. We identify the mechanisms behind the acoustic emission and show that the fundamental frequency of the sound is given solely by the rate of successive impacts of the spinning object onto the membrane as it rolls without slipping. A counter-intuitive observation is that the acoustic power emitted by a given ridged-edge object remains independent of the size of the balloon (over a wide range of volume) in which it spins. This experimental finding is explained by the influence of the tension within the membrane on the acoustic intensity. Finally, we propose a scaling law for the frequency-dependence of the acoustic intensity and show that the sound level depends greatly on the number of ridges on the edge of the spinning object.

show abstract