Abstract
In order to improve the safety of shipping process, this paper designs a graphical user interface for calculating the static water bending moment of super large ore earner. Due to the complexity of the actual loading conditions, the long hull girder and the mobility and sinking of cargo, the irregular distribution of gravity and buoyancy along the direction of the captain of the VLCC is prominent. In the actual loading process of ships, compartment loading is adopted in many cases, and the position where the maximum shear force and bending moment appear is generally not in the corresponding position. Traditional ship strength analysis methods can be divided into two kinds. One is to establish the ship’s finite element model to calculate the ship’s strength. The other is to calculate the ship’s strength according to the simple beam bending theory. In this paper, a 360m VALE MAX ore carrier is taken as an example to calculate the local bending moment of the ship at a specific position by using QT software. Compared with the ship loading manual, the error of the program is small, and the program has guiding significance in the actual shipping process.
Highlights
The calculation of the shear force and bending moment of the ship is an important premise for the safety of the ship navigation and the foundation of the automatic loading of the ship
SOLAS Convention requires that all bulk carriers with a master of not less than 150m and large open deck ships as defined in classification society specifications shall be equipped with corresponding computer software to calculate the static water shear and bending moment under various loading conditions
For the super large ship with non-uniform compartment loading, the maximum still water bending moment is not necessarily located near the middle of the ship, which is directly related to the loading state of the ship
Summary
The calculation of the shear force and bending moment of the ship is an important premise for the safety of the ship navigation and the foundation of the automatic loading of the ship. The calculation of static water shear and bending moment of large open deck ships such as bulk cargo and container is a mandatory requirement of SOLAS Convention. SOLAS Convention requires that all bulk carriers with a master of not less than 150m and large open deck ships as defined in classification society specifications shall be equipped with corresponding computer software to calculate the static water shear and bending moment under various loading conditions. [1] Even if the super large ship is optimized in hull strength, the probability of local shear and bending moment is higher than that of small ships due to the long captain. The trapezoidal distribution method is used to design the graphical user interface to calculate the local bending moment of the ship
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