Author(s)

L.A. de Lacerda, L.C. Wrobel & W.J. Mansur

Abstract

In this paper the Dual Boundary Element method is formulated and applied to study outdoor sound propagation where acoustic barriers are modelled as non- thickness bodies which may have different impedance conditions at each side. Standard and hypersingular integral equations are applied on each side of the barrier. The infinite impedance plane is incorporated into the Green's function in both equations avoiding the discretization of the ground. A numerical result is presented validating the formulation and the use of the non-thickness barrier approximation. 1 Introduction The conventional boundary integr

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