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How to model an anechoic layer on ANSYS?

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Old   February 26, 2021, 11:47
Default How to model an anechoic layer on ANSYS?
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Callum Daniels
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Hello everybody,

I am attempting to study the effects of air-cavity diameter on the acoustic absorption of an alberich coating using harmonic acoustics. Instead of modelling the water closure side I have applied an acoustic impedance boundary condition on the front face of the silicon layer (the anechoic layer). This layer is affixed to a steel backplate. A port has been applied to the exterior face of the silicon layer and a port in duct used to apply a load. I have subsequently calculated the absorption coefficient for the model in a 0-3500 Hz range but am getting nowhere near the desired result and wondered if anyone might be able to help me?

Thank you.
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fea, harmonic analysis

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