Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 2003.05a
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- Pages.224-228
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- 2003
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- 1598-2548(pISSN)
Performance Analysis of Noise Barriers of Complicated End Shapes
복잡한 끝단 형상을 갖는 방음벽의 성능해석
Abstract
A new analytic method is presented for predicting the performance of noise barriers having complicated end shapes like "Y", "T", inverted L, and other shapes. The insertion loss of the barrier is predicted by summation of multiple diffractions occurring at the comer points. Although previous studies treated diffractions occurring only at the convex points, the method presented in this paper considers diffractions at the concave point. As numerical examples, a partially inclined noise barrier and "T" shape noise barrier are studied. It is shown that the diffraction at the concave point may be neglected if the shortest path does not include the concave comer point.