Influence of the Connection Mode for the Vibration Characteristics of a Plate-Shell Coupled System

Abstract

As direct connection of a floor and the cylindrical shell would reduce sound stealth performance of underwater vehicles, an indirect connection mode is proposed. To compare the effect of connection mode on vibration transmission characteristics, two models, directly-connected model and indirectly-connected model, are designed and manufactured to take experiments. Experimental result shows that indirect connection can reduce the vibration energy transmitted from the floor to the shell when these two models have the same structural parameters. Thus indirect connection is more useful to improve the sound stealth performance of underwater vehicles.