Modeling of a one-dimensional acoustic device composed of a planar beam and fluid gap with discontinuity in thickness

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21260%2F17%3A00317523" target="_blank" >RIV/68407700:21260/17:00317523 - isvavai.cz</a>
Result on the web
<a href="https://asa.scitation.org/doi/abs/10.1121/2.0000838" target="_blank" >https://asa.scitation.org/doi/abs/10.1121/2.0000838</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1121/2.0000838" target="_blank" >10.1121/2.0000838</a>

Result language
angličtina
Original language name
Modeling of a one-dimensional acoustic device composed of a planar beam and fluid gap with discontinuity in thickness
Original language description
Precise modeling of 1D acoustic devices (passive or active, miniaturized or not) containing a planar beam loaded by a fluid gap and cavities is of interest in a variety of applications (transducers, acoustic filters, metamaterials, etc.). An analytical approach presented herein enables to describe the vibration of the planar elastically supported rigid beam of rectangular crossection surrounded by very thin slits and loaded by the fluid gap, which is divided in three parts of different thicknesses (the central part being the thinner one), the thermoviscous losses originating in the fluid being taken into account. Comparing to the case of the fluid gap of uniform thickness, such a geometry provides more parameters which can be adjusted in order to achieve the required behavior (resonant or damped, etc.). The analytically calculated beam displacement is presented and compared to the numerical solution provided by finite element method (a reference against which the analytical results are tested).
Czech name
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Czech description
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Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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