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Judul: Simulation of Dynamic Model to Analyze Sound Absorbing Characteristics of Polyurethane Foam
Penulis: Zeth Arthur Leleury  || email:
Jurnal: Prosiding FMIPA 2015 Vol. 1 no. 1 - hal. 210-225 Tahun 2015  [ MIPA ]
Keywords:  Biot, finite element method, modified theoretical solutions, polyurethane foam, sound absorption coefficient
Abstract: Noise is one of the problem that interfere the human health and activity. To solve these problem, the scientists have been developing many kind of soundproofing materials. Open-cell polyurethane foam has a great potential to be applied as an acoustic material because it has many advantages and benefits. Prediction problem of acoustic characteristics of the porous material has been developed by combining the Biot’s theory with various non- acoustic estimation model. This research will be analyzed sound absorbing characteristics of polyurethane foam using the finite element method and a modified theoretical solutions. Dynamic model that used is based on Biot’s poroelastic equations related to the solid skeleton and fluid displacements and then transformed into the Laplace domain. Analytical model that used is quadrilateral element model. And the approach that used to minimize the residual (error) is the Galerkin method. The results showed that the sound absorption coefficient is solved using the finite element method is closer to experimental results when compared with the modified theoretical solution.
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