Cabin Noise Prediction And Control Based On River-sea Lager Container Ship

Yangtze River golden waterway as a hub to support the domain of logistics,the importance is self-evident.At the same time,with the development of green ship concept,it is a strategic target to promote the standardization of inland river ships,study on the promotion of rever-sea ship and encourage the development of energy-saving environmental protection ship.With the ship and its power equipment increasingly large,the noise problem is more prominent,so reducing the vibration and noise is urgent.The more advanced noise reduction concept thinks that noise control should be started at the beginning of ship design,meanwhile,take measures to meet the requirements of cabin noise.Therefore,it is very important to estimate the cabin noise in the design stage.In this paper,tons of large River-sea ship as the research object,predicte cabin noise using statistical energy method,research modeling approach,take measures to reduce cab noise and summarize the form of Rever-sea ship cabin noise control process.The main contents of this paper:Based on the Statistical energy analysis method,research the modeling method,study on the several modeling factors and judge whether the above factors affect the cabin noise simulation results.1)Study the modeling method for Rever-sea large container ship based on the Statistical energy analysis method and judge if these factors(The way of build container?outboard water and plate)will affect the judgment of the cabin noise simulation.2)Use the thought of mathematics to analyze the parameters of modal density,internal loss factor and coupling loss factor.3)Considering the excitation effect of various noise sources,analyze the noise level of each cabin,evaluate the noise level and determine whether the cabin noise level meets the standard.4)Take the program to reduce noise and achieve the purpose of vibration and noise reduction.Finally,the formation of noise control process.