1、Ship Stresses and Shipbuilding Materials,Ship Movement,Heaving 垂蕩 Yawing 艏搖 Surging 縱蕩 Swaying 橫蕩 Rolling 橫搖 Pitching 縱搖,Longitudinal Stresses,Static Loading,Longitudinal Stresses Static Loading,Buoyancy 浮力 Weight 重量 Load 載荷 Shear force 剪力 Bending moment 彎矩,Longitudinal Stresses Static Loading,Hoggi

2、ng condition 中拱 Sagging condition 中垂,Longitudinal Stresses Static Loading,Crest 波峰 Trough 波谷,Longitudinal Stresses stress of the structure,Longitudinal Stresses stress of the structure,Transverse stresses Static loading,Deflection of plating 外板變形 Increasing static water pressure 靜水壓力隨水深而增加,Transvers

3、e stresses dynamic stresses,Distortion of structure 結(jié)構(gòu)變形 Rolling of ship accelerates structure tending to distort it 橫搖船體結(jié)構(gòu)加速 趨向使船扭曲變形 Racking橫向扭曲變形,Localized stresses Slamming or pounding,Heaving 垂蕩 Pitching 縱搖 Wave profile 波浪縱剖面波形圖 Ship forced down on to water 迫使船舶首跌 Summer load waterline 夏季吃水線 Po

4、unding region 波浪沖擊區(qū)域,Localized stresses Panting 拍擊,Localized stresses localized loading,Deflection of plating 外板變形 Cargo 貨物,Localized stressessuperstructure and discontinuities,Localized stresses Vibration,Propeller tip 槳梢 Clearance 間隙 Trailing edge 隨邊,steel,Finishing treatment Composition and prope

5、rties,Steel finishing treatment,Normalizing正火 (hard strong steel, with a refined grain structure) Annealing退火 (softer more ductile steel) Hardening淬火 (hardest, increased tensile strength) Tempering回火 (lower tensile properties),Steel composition and properties,Tensile strength 拉伸強(qiáng)度 Ductility 延展性 Hard

6、ness 硬度 Toughness 韌性,Tensile Strength,Tensile Strength(mild steel),Tensile Strength (higher tensile steel),Toughness Test,Toughness Test,Shipbuilding steels(mild steel),Reasonable cost Easily welded with simple techniques and equipment Ductility and homogeneity Yield point to be a high proposition of ultimate tensile strength Chemical composition suitable for flame cutting without hardening Resistance to corrosion,Higher tensile strength steels (short for HTS) This is done by alloying technique. Classification society (船級社)uses grade ma