Study On The Noise Forecast And Control Scheme Of Yangtze River Tourist Passenger Ship

With the development of social economy and the change of people’s life concept,in the shipping industry,tourist passenger ships have developed rapidly,people pay more and more attention to cabin noise,and have increasingly higher requirements for the noise comfort of ships.Therefore,the research on the prediction analysis and control of cabin noise of tourist passenger ships has important theoretical significance and practical value for improving the comfort of ships and the technical level of tourist passenger ships.The thesis focuses on the cabin noise of a tourist passenger ship.For cabins that do not meet the noise standard,the acoustic package noise control technology is used to propose a whole ship noise control scheme.The main research contents of this article are as follows:(1)Use VAone software to establish an acoustic analysis model,and use the finite element-statistic energy mixing method(FE-SEA)and statistical energy method(SEA)to predict and analyze the cabin noise of the whole ship in the middle and low frequency bands and high frequency bands.Evaluate and analyze the noise contribution rate of cabins that do not meet the noise standards;(2)According to the noise contribution rate,select the material of the appropriate acoustic package,design six acoustic packages,compare and analyze the sound insulation of each acoustic package,analyze and discuss the factors that affect the sound insulation performance of the acoustic package(3)Using MATLAB software,the second development of the optimization function of VAone software,and the optimal design of the material layer thickness of the four initial acoustic packages,and comparative analysis of the optimized acoustic package sound insulation performance;(4)For the cabins that do not meet the noise level,analyze the noise energy input of each target cabin,arrange the acoustic package on the board subsystem of the main input path,and propose a noise control scheme for the whole ship,so that the noise of each cabin meets the design standards.