本文關(guān)鍵詞：基于實(shí)船試驗(yàn)的鋼鋁混合結(jié)構(gòu)船舶噪聲預(yù)報(bào)與控制研究　出處：《武漢理工大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： MSC.337（91）決議 鋼鋁混合結(jié)構(gòu)船舶 實(shí)船測(cè)試 SEA方法

【摘要】：2012年11月國(guó)際海事組織（IMO）第91屆海安會(huì)（MSC91）通過(guò)了最新的《船上噪聲等級(jí)規(guī)則》，該規(guī)則將于2014年7月1日生效。MSC91決議對(duì)1600總噸以上的船舶提出了噪聲標(biāo)準(zhǔn)強(qiáng)制要求，與A.468（Ⅻ）標(biāo)準(zhǔn)相比，對(duì)于10000總噸以上船舶艙室噪聲，新標(biāo)準(zhǔn)在起居區(qū)噪聲限制值方面下降了5分貝，體現(xiàn)了新標(biāo)準(zhǔn)對(duì)舒適度方面的更高要求。為了能夠滿足新標(biāo)準(zhǔn)，我國(guó)在船舶設(shè)計(jì)初期就應(yīng)該考慮艙室噪聲聲學(xué)設(shè)計(jì)，對(duì)艙室噪聲預(yù)報(bào)與控制進(jìn)行相關(guān)研究。 本文主要介紹了船舶噪聲的基本概念，對(duì)國(guó)內(nèi)外噪聲預(yù)報(bào)以及控制進(jìn)行了總結(jié)和分析。簡(jiǎn)單闡述了船舶結(jié)構(gòu)聲基本理論，對(duì)SEA方法進(jìn)行了具體介紹。探討了新標(biāo)準(zhǔn)對(duì)我國(guó)的影響，對(duì)比了國(guó)內(nèi)外相關(guān)噪聲規(guī)則，提出我國(guó)在應(yīng)對(duì)新標(biāo)準(zhǔn)實(shí)施時(shí)應(yīng)采取的手段。對(duì)某鋼鋁混合結(jié)構(gòu)船舶進(jìn)行了實(shí)船噪聲測(cè)試，并對(duì)船舶噪聲測(cè)量進(jìn)行了簡(jiǎn)單介紹，分析了測(cè)試數(shù)據(jù)。在實(shí)船測(cè)試的基礎(chǔ)上，根據(jù)統(tǒng)計(jì)能量分析方法，建立了鋼鋁混合結(jié)構(gòu)船舶SEA模型，，對(duì)艙室進(jìn)行了噪聲預(yù)報(bào)，對(duì)比了艙室噪聲預(yù)報(bào)值與實(shí)測(cè)值，討論了非住艙、加筋、材料以及內(nèi)裝對(duì)船舶噪聲預(yù)報(bào)的影響。最后，簡(jiǎn)單介紹了船舶噪聲控制方法，主要從艙室布置、噪聲源、噪聲傳遞途徑以及接受者進(jìn)行噪聲控制，討論了阻尼敷設(shè)位置、阻尼厚度、耐火材料與阻尼組合形式對(duì)艙室噪聲的影響，并對(duì)目標(biāo)船舶采取噪聲控制手段，進(jìn)行降噪處理。 通過(guò)研究可以得到，在運(yùn)用SEA方法進(jìn)行艙室噪聲預(yù)報(bào)時(shí)，非住艙對(duì)艙室噪聲預(yù)報(bào)結(jié)果影響不大，可以在初始建模的時(shí)候進(jìn)行簡(jiǎn)化，全鋼模型與鋼鋁混合模型相比，上層建筑艙室噪聲變小，并且最上層艙室噪聲下降幅度最大，內(nèi)裝對(duì)艙室噪聲影響較大，預(yù)報(bào)時(shí)需要考慮。運(yùn)用耐火材料和阻尼組合形式可以降低艙室噪聲。
[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.
【學(xué)位授予單位】：武漢理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U661.44

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