Simulation on deck side corner and its effect to the ultimate strength

Abstract The deck is one of the ship constructions located above the draft. The deck structure must be designed appropriately, especially at the corner side. This is caused by the impact of water flowing on the deck. As a result of this water flowing, the side corner of the deck must be constructed so that water does not pool on the deck. The aim of this study is to examine how the shape of the deck-side corner affects the ultimate strength of a double-hull ship. Three models of double-hull boats are considered to be investigated with different shapes of deck side corners. The ship’s dimensions are 42 meters in width and 20.3 meters in depth. The longitudinal direction with respect to length is considered one frame space of 5 m. The three models ’ breadth, depth, and length dimensions are constant. The material properties, such as density, yield strength, elastic modulus, and Poisson’s ratio, are assumed to remain constant. The analysis focuses on the cross-section of the double-hull ship. In this study, the influence of the deck side corner shape on ultimate strength is investigated using the Multiple Point Constraint (MPC) method. The position of the neutral axis is determined in advance to allow for the placement of the MPC. The MPC is applied to one side of the cross-section, while the opposite side is fixed securely. A four-node quadrilateral shell element is used in the Finite Element Method to model the entire cross-section of the double-hull ship. The analysis shows that the first model of the double hull ship has the highest ultimate strength, followed by the second model, with the third model having the lowest strength.