抄録
Structure-borne sound radiation can be reduced by adding sound absorption to the surface of the structure using perforated plate. In this paper, a self-developed numerical analysis technique for sound fields including perforated plate is described. The technique is acoust - structural coupled analysis technique by applying boundary element method to the sound fields and applying finite element method to the perforated plate. Using the numerical analysis, the reduction of the structure-borne sound is predicted. The validity and usefulness of the numerical analysis technique is verified by comparing the analysis result with an experimental result.
