Application of statistical energy method in ship noise prediction
Ship fan,propeller,generator and so on will produce noise,cabin noise will have a certain impact on crew life.It is of great significance to study the prediction and control of ship cabin noise for ship structural aid design.In this pa-per,the basic principle of statistical energy method(SEA)is introduced,the energy transfer model of SEA is studied,the modal density calculation formula of beam system and standard plate is given,the noise source of ship is analyzed,and the law of different noise excitation,sound absorption coefficient of cabin steel plate and internal loss factor change with fre-quency is studied.The simulation of ship cabin noise prediction using VA one software shows that the statistical energy method can predict the noise more accurately.
万方数据
维普
