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Descripción
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| One way to amplify an incoming signal is to design a receiver that couples with the signal frequency. In this study a resonant system made of a belt, one part exposed to the incoming signal and the other part inserted in a protected cavity is investigated. The cavity is shaped like a tapered horn in order to obtain maximum amplification at the horn tip. A finite element model based on displacement fields for the acoustic fluid and the belt is developed. The moving surfaces are coupled in such a way that the coupled stiffness and mass matrices are symmetric. Different resulting coupling modes are analysed. A prototype is constructed in order to verify the numerical results. The experimental and numerical results agree to within 6%. The desired amplification inside the cavity is obtained and the time exposure necessary to reach a stationary wave inside the cavity is measured. The design is a simplified, bio inspired, representation of a Ziphius cavirostris lower jaw bone and its surrounding fat cavity. | |
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Internacional
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Si |
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JCR del ISI
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Si |
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Título de la revista
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Applied Acoustics |
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ISSN
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0003-682X |
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Factor de impacto JCR
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1,068 |
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Información de impacto
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Datos JCR del año 2013 |
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Volumen
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106 |
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DOI
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doi:10.1016/j.apacoust.2015.12.016 |
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Número de revista
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Desde la página
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135 |
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Hasta la página
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143 |
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Mes
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MAYO |
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Ranking
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