Research On The Noise Prediction And Control Method For High-speed Ship

High-speed ship since the 20th century 1950s, the speed of ships appeared on breakthrough novel concept of a new generation of boats, its appearance in large measure to change the traditional structure of the transport situation, the transport industry to inject new vitality. However, the high-speed has brought a serious vibration and noise problems, and coupled with the high-speed passenger services a higher level of the living environment of more demanding harshTherefore in the development of high-speed ship design stage forecast cabin noise, thereby reducing vibration and noise to take measures to meet the requirements.Statistical Energy Analysis method began in the 20th century 1960s aerospace industries, with the statistical point of view, from the perspective of energy to analyze complex structures under external loads response to the rapid and accurate simulation, high frequency acoustic characteristics, but also to effectively predict structural vibration products.This paper explains how the use of statistical energy analysis software AutoSEA establish high-speed ship cabin noise sonicated imitation true model based on the statistical energy analysis method for high-speed ship cabin noise prediction district, and analysis of noise transmission path, thereby depressing study.For SEA parameters, such as modal densities, damping loss factor, coupling loss factor, the structure of different types, simplify a series of theoretical formula. For the noise source, through the analysis, the choice of High-speed ship mainframe significant impact excitation of the SEA loading model. Then the solution was reached by the study of the cabin noise level subsystem. By analyzing noise control ship to the general principles and common methods, the use of AutoSEA study noise propagation path, path to be the key element of the cabin noise level of contribution. Based on this proposed targeted measures and reducing vibration and noise model used again in software simulation, improve living areas cabin noise level, the completion of the cabin noise level optimization. The research on how to apply statistical energy law and AutoSEA software sonicated, how to establish a system simulation model, how effective in high-speed ship design stage of the ship cabins for reducing vibration and noise to a certain extent guide and reference value.