發(fā)布時間：2018-07-04 12:08

  本文選題：龍骨帆船 + 荷載布局　； 參考：《集美大學(xué)》2016年碩士論文

【摘要】：帆船穩(wěn)性是指船受到外力作用時,船體產(chǎn)生縱傾和橫傾后,恢復(fù)傾側(cè)的能力,是帆船航行的基本保障和帆船檢驗(yàn)的主要內(nèi)容,也是帆船設(shè)計(jì)和使用人員最為關(guān)注的問題之一。通常船舶穩(wěn)性一般僅考慮船舶在靜水中的穩(wěn)性,但實(shí)際航行中,波浪對穩(wěn)性的影響、船舶航行動穩(wěn)性對安全的影響,兩者不容忽視。對于龍骨帆船,海上掛帆航行是一個復(fù)雜的過程,航行姿態(tài)與常規(guī)船舶不同,航行時通常會與水面傾斜一定角度,風(fēng)帆受風(fēng)面積大、風(fēng)壓中心高,海上航行的帆船比一般船舶傾覆的安全隱患更大。目前,國內(nèi)外對龍骨帆船穩(wěn)性研究的文獻(xiàn)較少,為了研究龍骨帆船靜水穩(wěn)性、隨浪穩(wěn)性以及航行狀態(tài)下的動穩(wěn)性變化規(guī)律,本文以國內(nèi)某游艇企業(yè)自主開發(fā)的一艘龍骨帆船為例,展開以下研究工作:1)建立龍骨帆船三維模型,采用可變重量位置變化對穩(wěn)性影響的計(jì)算方法,基于MAXSURF軟件進(jìn)行龍骨帆船靜水穩(wěn)性計(jì)算,重點(diǎn)研究乘員布局作為荷載位置變化對龍骨帆船穩(wěn)性的影響規(guī)律,得到乘員布局對穩(wěn)性影響最大程度分別位于艙內(nèi)客廳、尾部甲板和上層甲板布局。依據(jù)規(guī)范,獲得不同乘員布局下的滿帆作業(yè)的安全操帆風(fēng)速變化范圍為3.8m/s至8.8 m/s,即乘員不同的裝載位置所能滿足規(guī)范達(dá)到的最大操帆風(fēng)速相差近57%。2)基于表面積分法進(jìn)行龍骨帆船隨浪穩(wěn)性研究,分析隨浪中不同的波浪參數(shù)和船波相對位置對龍骨帆船完整穩(wěn)性變化的規(guī)律。結(jié)果表明:波浪要素對龍骨帆船初穩(wěn)性影響較大,其中船中位于隨浪上坡段位置時的初穩(wěn)性高比靜水平面初穩(wěn)性高減小了近37%。龍骨帆船隨浪波峰與隨浪下坡段位于船中時大傾角穩(wěn)性會減小,且發(fā)生在橫傾范圍大于60°下,而對于龍骨帆船隨浪波谷與隨浪上坡段位于船中時會以橫傾角65°左右為界,出現(xiàn)隨浪大傾角穩(wěn)性與靜水穩(wěn)性大小差異呈相反趨勢。3)基于帆船運(yùn)動力學(xué)和VPP理論,運(yùn)用MAXSURF VPP計(jì)算龍骨帆船的航行姿態(tài),得到帆船航行的航速與傾角范圍。依據(jù)航行姿態(tài),建立數(shù)值水池,利用CDF數(shù)值模擬龍骨帆船在不同航速且強(qiáng)迫橫傾航行下的航行動穩(wěn)性性能。結(jié)果表明:龍骨帆船靜水強(qiáng)迫橫傾10°和20°航行時,帆船在設(shè)計(jì)航速范圍內(nèi)隨著航速的增加復(fù)原力矩下降趨勢分別為8.0%和6.4%。迎浪航行各工況最大復(fù)原力矩與靜水航行相比減少量可達(dá)到22.40%~53.61%。4)依據(jù)CCS規(guī)范《2012帆艇檢驗(yàn)指南》中對龍骨帆船完整穩(wěn)性的衡準(zhǔn)要求,利用C#語言對Rhinoceros軟件進(jìn)行二次開發(fā),實(shí)現(xiàn)計(jì)算精度高、計(jì)算效率優(yōu)勢明顯的龍骨帆船穩(wěn)性衡準(zhǔn)插件系統(tǒng)的開發(fā)。
[Abstract]:Sailing stability refers to the ability of the ship to recover the tilting ability when the ship is subjected to external forces. It is the basic guarantee of sailing and the main content of sailing survey. It is also one of the most concerned issues for the design and use of sailboat. Generally, the stability of ships only considers the stability of ships in still water, but in the actual navigation, the influence of wave on stability and the influence of ship dynamic stability on safety can not be ignored. For keel sailing, sailing on the sea is a complicated process. The attitude of sailing is different from that of conventional ships. When sailing, it usually inclines to the surface of the water at a certain angle, and the windsurfing has a large area of wind and a high center of wind pressure. Sailboats sailing at sea pose greater safety risks than the capsizing of ships. At present, there are few literatures on the stability of keel sailboat at home and abroad. In order to study the static water stability of keel sailboat, the variation law of dynamic stability with wave stability and the dynamic stability under sailing state is studied. In this paper, a keel sailing boat developed by a domestic yacht enterprise is taken as an example. The following research work is carried out: 1) the three-dimensional model of the keel sailing boat is established, and the influence of variable weight position on stability is calculated. Based on MAXSURF software, the static water stability calculation of keel sailboat is carried out, and the influence of crew layout as load position on the stability of keel sailboat is studied. The results show that the maximum influence of crew layout on stability is located in the living room of cabin. Tail deck and upper deck layout. According to the norms, The safe operating wind speed of full sail operation with different crew layout varies from 3.8m/s to 8. 8 m / s, that is, the maximum wind speed difference reached by different loading positions of the crew is approximately 57. 2) the keel is based on the surface integration method. A study on the stability of sailboats following waves, The variation of the intact stability of the keel sailboat with different wave parameters and the relative position of the ship wave is analyzed. The results show that the wave factor has a great influence on the initial stability of the keel sailboat, in which the initial stability of the ship in the position of the upper slope with the wave decreases by nearly 37% compared with the initial stability in the static plane. The stability of large dip angle of keel sailboat at midship is reduced when the wave peak and downhill section is in the middle of the ship, and occurs in the range of heeling greater than 60 擄, but the slope angle is about 65 擄when the trough and the upper slope section of the keel sailing boat are in the middle of the ship. On the basis of kinematic mechanics and VPP theory, MAXSURF VPP is used to calculate the navigation attitude of the keel sailboat, and the range of speed and inclination angle is obtained. Based on the attitude of navigation, a numerical pool was established, and the dynamic stability of keel sailing under different speeds and forced heeling was simulated by using CDF. The results show that when the keel sailing with static water forced heeling at 10 擄and 20 擄, the recovery torque decreases by 8.0% and 6.4% respectively with the increase of speed in the range of design speed. According to the criterion of 2012 sail boat inspection guide, according to the standard requirement of the integrity and stability of the keel sailboat, the software Rhinoceros is further developed by using C # language, compared with the static water navigation, the maximum recovery moment of each condition can be reduced to 22.4040 and 53.61.4) according to the criterion of "2012 sail boat inspection guide", this paper makes a second development of the Rhinoceros software by using the C # language. The development of keel sailboat stability leveling plug-in system with high calculation precision and obvious calculation efficiency is realized.
【學(xué)位授予單位】：集美大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：U661.22

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本文編號：2096029