Safety Assessment of the Ship's Stern Shaft Deformations under Extreme Load Conditions
Safety assessment of stern shaft deformation during the ship design and construction stage cannot fully cover the actual sailing conditions.A method for safety assessment of stern shaft deformation of ships sailing in waves was proposed,by u-sing an actual extreme sailing condition of semi-submersible vessel as example.The hull wave load was determined by the design wave method;the hull stern shaft deformation was direct calculated by using the whole ship finite element model,and the shaft safety assessed by shaft alignment calculation according to rules,reliability of the assessment also verified by using ship loading manual.This method was verified to be a valid and complete method for stern shaft safety assessment.
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