基于实船试验的钢铝混合结构船舶噪声预报与控制研究

发布时间：2017-12-30 21:04

本文关键词：基于实船试验的钢铝混合结构船舶噪声预报与控制研究　出处：《武汉理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：2012年11月国际海事组织（IMO）第91届海安会（MSC91）通过了最新的《船上噪声等级规则》，该规则将于2014年7月1日生效。MSC91决议对1600总吨以上的船舶提出了噪声标准强制要求，与A.468（Ⅻ）标准相比，对于10000总吨以上船舶舱室噪声，新标准在起居区噪声限制值方面下降了5分贝，体现了新标准对舒适度方面的更高要求。为了能够满足新标准，我国在船舶设计初期就应该考虑舱室噪声声学设计，对舱室噪声预报与控制进行相关研究。本文主要介绍了船舶噪声的基本概念，对国内外噪声预报以及控制进行了总结和分析。简单阐述了船舶结构声基本理论，对SEA方法进行了具体介绍。探讨了新标准对我国的影响，对比了国内外相关噪声规则，提出我国在应对新标准实施时应采取的手段。对某钢铝混合结构船舶进行了实船噪声测试，并对船舶噪声测量进行了简单介绍，分析了测试数据。在实船测试的基础上，根据统计能量分析方法，建立了钢铝混合结构船舶SEA模型，，对舱室进行了噪声预报，对比了舱室噪声预报值与实测值，讨论了非住舱、加筋、材料以及内装对船舶噪声预报的影响。最后，简单介绍了船舶噪声控制方法，主要从舱室布置、噪声源、噪声传递途径以及接受者进行噪声控制，讨论了阻尼敷设位置、阻尼厚度、耐火材料与阻尼组合形式对舱室噪声的影响，并对目标船舶采取噪声控制手段，进行降噪处理。通过研究可以得到，在运用SEA方法进行舱室噪声预报时，非住舱对舱室噪声预报结果影响不大，可以在初始建模的时候进行简化，全钢模型与钢铝混合模型相比，上层建筑舱室噪声变小，并且最上层舱室噪声下降幅度最大，内装对舱室噪声影响较大，预报时需要考虑。运用耐火材料和阻尼组合形式可以降低舱室噪声。
[Abstract]:In November 2012, the International Maritime Organization (IMO) 91st Maritime Safety Council (MSC 91) adopted the latest ship noise level Code. The rules will come into effect on July 1st 2014. MSC91 resolution on ships more than 1600 tons of noise standards mandatory requirements, compared with the A.468 (XII) standard. For the cabin noise of ships above 10000 tons, the new standard is reduced by 5 decibels in the noise limit of the living area, which reflects the higher requirements of the new standard for comfort, in order to meet the new standard. In our country, the acoustic design of cabin noise should be considered in the early stage of ship design, and the prediction and control of cabin noise should be studied. This paper mainly introduces the basic concept of ship noise, summarizes and analyzes the noise prediction and control at home and abroad, and briefly expounds the basic theory of ship structure sound. The SEA method is introduced in detail, the influence of the new standard on our country is discussed, and the relative noise rules at home and abroad are compared. This paper puts forward the measures that should be adopted in the implementation of the new standard in our country. The noise measurement of a ship with steel-aluminum mixed structure is carried out and the noise measurement of the ship is simply introduced. The test data are analyzed. Based on the method of statistical energy analysis, the SEA model of steel-aluminum mixed structure ship is established, and the noise of the cabin is forecasted. The noise prediction value of cabin is compared with the measured value, and the influence of non-residential cabin, reinforced, material and inner installation on ship noise prediction is discussed. Finally, the noise control method of ship is briefly introduced, mainly from the cabin layout. The noise source, the path of noise transmission and the noise control of the receiver are discussed. The influence of the location of damping laying, the thickness of damping, the combination of refractories and damping on the cabin noise is discussed. The noise control method is adopted to reduce the noise of the target ship. Through the research, it can be concluded that when using the SEA method to forecast the cabin noise, the non-residential cabin has little effect on the cabin noise prediction results, and can be simplified in the initial modeling. Compared with the mixed steel and aluminum model, the noise of the superstructure cabin becomes smaller, and the noise of the upper compartment decreases the most, and the inner installation has a greater impact on the cabin noise. It is necessary to take into account in prediction. The compartments of refractories and damping can reduce cabin noise.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U661.44

【参考文献】