抄録
The arrangement of the dynamic vibration absorber that decrease the radiation sound from the thin plate was studied. In previous work, we proposed the algorithm that decided the optimum arrangement of the dynamic vibration absorber. However, it is not necessarily practical because it takes time to decide the arrangement. This study shows that the vibration can be effectively decreased by the dynamic vibration absorber arranging periodically at intervals below 1/2 wavelength of the bending wave of the panel. Moreover, it was clarified that a triangular arrangement was more effective than a square arrangement.
