Prediction of interior noise in buildings generated by underground rail traffic
Nagy, AB × Fiala, P Marki, F Augusztinovicz, F Degrande, Geert Jacobs, S Brassenx, D #
Academic press ltd elsevier science ltd
Journal of sound and vibration vol:293 issue:3-5 pages:680-690
The prediction of sound field in cavities surrounded by vibrating walls is a simple task nowadays, provided that the velocity distribution along the walls is known in sufficient detail. This information can be obtained from a structural finite element (FE) calculation of the building and the results can be fed directly into a conventional boundary element (BE) analysis. Though methodically simple, it is not an attractive way of prediction from the practical point of view: the size of the matrices needed for BE calculation is too large, thus their inversion is very cumbersome and computationally intensive.