Based on “shallow sea effect”, the author studies the forecasting of wave induced motion and loading for the shallow sea super large FPSO for oil field PL19 3, presents Y side structure which can strengthen the side structure's anti crush capacity and compares it with FPSO of conventional scale VLCC. It puts emphasis on the equivalent couple method design of module bearing special structure load.

A finite element model of the whole ship is set up using SESAM software of the DNV classification society. Then the long term prediction of wave induced motion and random loading is carried out, based on which the certain wave load is calculated with design wave method. Finally the stress distribution and the deformation result of the ship structure under the certain wave load are obtained.

This method is commonly used on research vessels because the inertial subrange estimates are generally uncontaminated by wave-induced motion.

The accurate calculation of bending-torsion combined deformation and stress of anopen hatch ship must be done on an entire model of ship hull. As an example, calculationof a 50,000 DWT open hatch ship is introduced in this paper. By a 3-D radiation-diffrac-tion hydrodynamic program the long term prediction of wave induced motion and loading isperformed, based on which a group of design waves are defined. The bending-torsion com-bined deformation and stress in each part of main structural members...

The accurate calculation of bending-torsion combined deformation and stress of anopen hatch ship must be done on an entire model of ship hull. As an example, calculationof a 50,000 DWT open hatch ship is introduced in this paper. By a 3-D radiation-diffrac-tion hydrodynamic program the long term prediction of wave induced motion and loading isperformed, based on which a group of design waves are defined. The bending-torsion com-bined deformation and stress in each part of main structural members of ship hull on de-sign waves are calculated by an FE model of entire ship hull. A local model of open hatchcorner with refined FE mesh is inserted in entire ship model and the stress concentration athatch corner is shown out simultaneously with whole ship analysis. The properties ofwave loading on a ship, the way of defining design waves, the way of FE calculation for anentrie ship and the inertia equilibrium of floating body are described. All direct calculationwork are performed by DNV'S SESAM system.

Taking a 1700 TEU container vessel as an example,a method of the entire ship hull FE analysis is described.An entire ship FE model and a mass model are set up.Then,by using a 3 D radiation diffraction hydrodynamic program,the long term prediction of wave induced motion and random loading was performed,based on which a group of design waves is defined.The stress and deformation for each design wave are calculated...

Taking a 1700 TEU container vessel as an example,a method of the entire ship hull FE analysis is described.An entire ship FE model and a mass model are set up.Then,by using a 3 D radiation diffraction hydrodynamic program,the long term prediction of wave induced motion and random loading was performed,based on which a group of design waves is defined.The stress and deformation for each design wave are calculated and the detailed deformation and stress for each part of main structural members of ship hull are obtained.The proposed method can be used for the design and strength analysis of container vessels.

In this paper, a 3800TEU container ship is taken as an example. 2-D strip theory is used to calculate the long term prediction of wave induced motion and loading, based on which a group of equivalent waves are defined. The bending torsion combined deformation and stress in each part of main structural members of the ship hull under every equivalent wave train are calculated by a 3 D global FE model of the whole ship. The way of FE analysis of the whole ship for the container ship can be used...

In this paper, a 3800TEU container ship is taken as an example. 2-D strip theory is used to calculate the long term prediction of wave induced motion and loading, based on which a group of equivalent waves are defined. The bending torsion combined deformation and stress in each part of main structural members of the ship hull under every equivalent wave train are calculated by a 3 D global FE model of the whole ship. The way of FE analysis of the whole ship for the container ship can be used to other types of ships.