固体音領域まで考慮した各種の床構造におけるモビリティ予測方法 : 鉄筋コンクリート構造床について

概要

論文の詳細を見る
The high-frequency vibration characteristics of floor plates are the basis for the analysis of the propagation and radiation of solid-borne sound in buildings: In this report, the authors propose a method of predict both the driving point and transfer mobility from modal parameters which are calculated by Eigenvalue analysis. Results obtained by this analytical method are com-pared with measured values and discussed. The authors selected the reinforced concrete floor plates to be the subject of the investigation. The points discussed in the report include the following; 1) Determination of the appropriate size of the divisions for the finite elements. 2) Method of determining the boundary conditions of floor plates. 3) Use of the value 3 % obtained from experimental modal analysis as the damping coefficient. 4) Method of correction for the sizes of driving and receiving points. On the basis of the above, the mobility of various floor structures, including high-frequency vibration properties, can be predicted. If the exact vibration fores is available, the method predicted is highly accurate. Accordingly, this method is useful for the dynamic analysis of floor plates.
社団法人日本建築学会の論文
1988-09-30