✦ LIBER ✦
A DUAL BOUNDARY ELEMENT FORMULATION FOR SOUND PROPAGATION AROUND BARRIERS OVER AN IMPEDANCE PLANE
✍ Scribed by L.A. de Lacerda; L.C. Wrobel; W.J. Mansur
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 214 KB
- Volume
- 202
- Category
- Article
- ISSN
- 0022-460X
No coin nor oath required. For personal study only.
✦ Synopsis
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 that 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 function in both equations, avoiding the discretization of the ground. Numerical results are presented validating the formulation and the use of non-thickness barriers.