5003 Lectures - Faculty of Engineering and Applied Science

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E5003 - Ship Structures I 56 © C.G. Daley The difference between this and the weight moment (hog) will give the SWBM. Rhino model, showing slices and centroids Topic 6: Problems 6.1. Using a spreadsheet, plot the design trochoidal wave for a 250m vessel, for the L/20 wave. 6.2. Using a spreadsheet, plot the design trochoidal wave for a 250m vessel, for the 1.1 L .5 wave.
E5003 - Ship Structures I 57 © C.G. Daley Topic 7: Longitudinal Strength: Inclined Bending / Section Modulus Introduction In this Chapter we will • Discuss the calculation of bending of an inclined vessel • General calculation of hull section modulus/inertia ~~~~~~~~~~~~~~~~~~~~ Inclined and Lateral Bending a breaking wave in Lisbon When a ship rolls the weight and buoyancy forces cause lateral as well as vertical bending. Normally the bending moment vector is aligned with the ship’s y axis. My is the bending moment that results from buoyancy and weight forces. When the vessels rolls by an angle q, the moment vector remains horizontal. This is because the buoyancy and gravity forces are always vertical. This means that the bending moment is no longer aligned with the y,z axis of the vessel;
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5003 Lectures - Faculty of Engineering and Applied Science

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