Cabin Noise Prediction and Acoustic Optimization Design of a Cruise Ship

Abstract

The cabin noise level is an important criterion in high-performance ships, and the noise prediction is the premise of the ship noise control and low noise design. Taking a cruise ship as the research object, a comprehensive application of the statistical energy analysis (SEA) and the finite element-statistical energy analysis hybrid method (FE-SEA) is used to predict the full-frequency noise of typical cabins. The structure-borne noise and air-borne noise, caused by the external excitation from the main engine, propellers and auxiliary machinery, are obtained with the empirical formula. The primary noise sources of typical cabins are analyzed. The noise reduction scheme of sound package is adopted and optimized for the cabin with excessive noise.