Abstract
In our previous report, a concentrated mass model was proposed to analyze a two-dimensional acoustic analysis. The model takes into account a sound attenuation from viscosity. In this paper, we propose a concentrated mass model to perform a coupled analysis of a two-dimensional acoustic and a membrane vibration. Sound space and a membrane are modeled as masses, connecting springs, and connecting dampers. And we propose a coupling method between the acoustic analysis and the vibration analysis. To confirm the validity of the proposed model, the numerical results obtained by the concentrated mass model are compared with the theoretical value of the natural frequency. The numerical computational results agree very well with the theoretical values. Therefore, it is concluded that the proposed model is valid for the coupled analysis of acoustic and vibration analysis.
