王迎光新課件第二章

1、 21 Introduction Chapter Two: FlotationW 33,/Wship weighttonnesship displacementtonnesship displacement volumemwater specific gravitymtonnes BwWGIn the above formula: 重力與浮力的大小相等而方向相反 Chapter two: Flotation,GBGBWxxyy Upright Flotation 正浮狀態(tài)ddxG= xByxzB zG WGBozzBGWo,0,()GBBGGBWxxyyzztg Heeling conditi

2、on 橫傾狀態(tài) Chapter two: FlotationzG zB ydoWGBzxxG= xByGyBzoBGW,0,()GBBGGBWyyxxzztg Trim condition 縱傾狀態(tài) Chapter two: FlotationxddFZB ZG dAdyZB ZG WGBozXBXGoWGBz,(),()BGGBBGGBWxxzztgyyzztg Arbitrary condition 任意狀態(tài) Chapter two: FlotationzB zG dAxBxGWoGBxdyzB zG GBoyByGdFzWz 22 Ship weights and center of g

3、ravity Chapter two: Flotation1231nniiWWWWWW111111nnniiiii iiiiGGGnnniiiiiiWxWyWzxyzWWWTotal weights 總重量Center of gravity 重心 23 Displacement and center of buoyancy Chapter two: FlotationyxFyFzdzxoydxoxdzxWdA dz /2/22LWLAydx/200/22ddLWLA dzydxdz yozFWdMxA dzxoyWdMzA dz/2/22LoyLMxydx排水量和浮心位置計算 23 Displ

4、acement and center of buoyancy Chapter two: FlotationyxFyFzdzxoydxoxdzx/2/2/2/2LoyLFLWLxydxMxAydz/200/22ddLyozFWLMxA dzxydxdz /20/2/20/2dLyozLBdLLxydxdzMxydxdz /200/22ddLxoyWLMzA dzzydxdz /20/2/20/2dLxoyLBdLLyzdxdzMzydxdz 排水量和浮心位置計算 23 Displacement and center of buoyancy Chapter two: Flotation8y7y6y

5、5y3y1y2y4y04213657y1 7y1 6y1 5y1 4y1 3y1 2y1 1y1 0y9y8y1 8y1 91 61 21F91 11 41 31 5y2 02 01 81 71 9XyYXFd xXL / 2L / 2 用梯形法計算水線面積/2/222LWiLAydxLy/0200119202iyyyyyyy/2/2/222LoyiiLMxydxLk y/101191281912002000121910102iik yyyyyyyyyyyy / 2/ 2/ 2/ 2LiioyLFLWiLxydxk yMxLAyydzwherewhereFinally 23 Displacem

6、ent and center of buoyancy Chapter two: FlotationWaterplane area curve and its properties水線面面積曲線和其特性0dWA dz 00dWBdWzA dzzA dzVPCWdoCDEoCDFAd面積面積Aw1oEAw0FAwCZAw2AwAwdDddzZ 23 Displacement and center of buoyancy Chapter two: Flotation Tonnes per centimeter curve 每厘米噸數(shù)曲線( /)100WwATPCt cmDisplacement vo

7、lume curve 排水體積曲線kk曲線曲線曲線oz0101211()2()()idiWWWWWWnWnA dzdAAAAAA 23 Displacement and center of buoyancy Chapter two: Flotation Longitudinal center of buoyancy curve浮心縱向坐標曲線 Vertical center of buoyancy curve浮心垂向坐標曲線zZBZB= f ( z )zZBZB= f ( z )XB= f ( z )xF=xB尾首XF= f ( z )xF,xBz 23 Displacement and ce

8、nter of buoyancy Chapter two: Flotation Sectional area curve and its properties 橫剖面面積曲線及其特性zZBZB= f ( z )oL / 2xL / 2d xbAMASASxdc/2/22LSLA dx /2/2/2/2LSLBLSLxA dxxA dxPMCobcdAL曲 線 所 圍 面 積矩 形 面 積 24 Bonjean curve and its application Chapter two: Flotation zZBZB= f ( z )AS= f ( z )1 0dA20W1648Mo y= f

9、 ( z )1 21 61 42 01 8dFL1/2/22LSLA dx / 2/ 2/ 2/ 2LSyozLBLSLxA dxMxA dx/ 2/ 2/ 2/ 2LoyxoyLBLSLMdxMzA dx邦戎曲線及其運用 25 Flasov curve and its application Chapter two: Flotation zZBZB= f ( z )20001,2ZZZozoyaydzbmy dzcmzydzoa , b , ca = f ( z )zc = f ( z )b = f ( z )yozyzdzFlasov curve can be utilized to calculate the displacement volume and center of buoyancy at trim and heeling conditions 符拉索夫曲線可用于計算船舶在具有縱傾和橫傾狀態(tài)下的排水體積和浮心位置 Load line marks Load line marks 載重線標志載重線標志 Chapter two: Flotation