Research On Sound Isolation And Noise Reduction Technology Of Modular Cabin Of Luxury Cruise Ship

Luxury cruise is known as the world shipbuilding "crown pearl",different from ordinary ships,luxury cruise rooms as many as thousands of rooms;With the increasing requirements for cruise comfort and sound insulation and noise reduction in the world,it is necessary to study the sound insulation and noise reduction technology of cruise cabins.In this thesis,the typical modular cabin of the first domestic luxury cruise ship was taken as the research object,and the cabin noise was evaluated and analyzed by numerical simulation.The acoustic properties of cabin acoustic insulation materials were analyzed by numerical simulation and experiment.At the same time,the sound insulation technology of the modular cabin of the cruise ship is studied by numerical simulation,so as to realize the sound insulation and noise reduction of the modular cabin of the cruise ship.The main research contents of this thesis are as follows:(1)The basic principle of the statistical energy analysis method used in this thesis and the basic physical quantity of noise were studied,and the basic parameter concept and solution formula of the statistical energy method were summarized.(2)VA one,a full-frequency noise simulation software,was used to build a typical modular cabin model of cruise segment,and a semi-infinite fluid was connected at the bottom of the model to simulate the seawater environment.The parameters and excitation sources are defined on the SEA subsystem model,and the noise prediction and evaluation of the modular cabin of the cruise ship are carried out,and the noise results of each region are analyzed.(3)VA one software was used to solve and analyze the sound absorption coefficient of traditional "three cotton" materials,and FOAM-X,a professional acoustic material software,was used to reverse verify the material parameters and solve the material insertion loss.The sound absorption coefficient of the new light fiber material used in domestic cruise ship was measured by standing wave tube experiment,and its insertion loss was solved.The acoustic performance of the new light fiber material was compared with that of traditional "three cotton" material.(4)This thesis analyzes the sound insulation of the connecting form of the modular cabin of the cruise ship,and studies the noise analysis method of VA one in the full frequency band,and then analyzes the sound insulation volume of the cabin sound insulation board structure,so as to provide corresponding schemes for the laying of the cabin panel in different areas.Finally,VA one software was used to re-evaluate the model after sound insulation and noise reduction measures were taken,and the noise cloud image and sound pressure level of each region were obtained,so as to verify the sound insulation effect.