Describing structure-borne sound transmission via a resiliently-supported staircase landing is complex due to the effects of wave conversion and non-linear behaviour of the resilient material. As a first step it is important to gain insight into the vibration behavior of the structure. Through analysis of vibration transmission from the landing through the resilient element into the separating wall the aim is to relate appropriate acoustical parameters to the specific elements (i.e. flight of stairs, stair landing or decoupling elements) and produce a prediction model based on EN 12354. The vibration behavior of a representative landing construction has been investigated by experimental and computational modal analysis as well as the finite element method. The intention is to use the FEM model to simulate transmission from the landing through the resilient layer into the wall to enable parameter studies. The vibration behaviour of the landing and the transmission through the resilient layer are of particular importance regarding the whole transmission process as illustrated in Figure.
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