抄録
This paper presents a new structural design concept where the structural intensity (SI) technique is used to reduce the sound radiated from a compound plate structure. This concept is based on the modal expansion of the SI which can be classified into two types of power flow: vortex-type and straight-type distributions. Vortex-type SI would be useful for interrupting power transmission between plate subsystems of compound plate structures. On the other hand, straight-type SI would be useful for promoting the power transmission. In this study, numerical simulations are carried out to demonstrate the effectiveness (or the validation) of the concept by using J-shaped structure.
