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- W2521023752 abstract "This paper investigates the steady-state sound field above a patchwork of absorbing materials through a combined experimental-numerical analysis. In view of addressing a wide frequency range, a new modeling approach, based on the Trefftz method, is adopted. The approach describes the dynamic field variables in terms of global wave function expansions that satisfy the governing dynamic equations exactly. Since approximation errors are associated only with the boundary conditions of the considered problem, a computationally more efficient approach is obtained as compared to conventional finite element models. In a first approximation, the absorbing materials are assumed to react as equivalent fluids, neglecting the solid phase frame dynamics in the various patches. The paper reports on a first experimental campaign and provides some insight into acoustic behavior of patchworks as well as the accuracy of the proposed modeling approach." @default.
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- W2521023752 date "2005-08-01" @default.
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- W2521023752 title "Application of the wave based technique for the sound field prediction above a patchwork of acoustic absorbing materials" @default.
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