Literature published on the problem of ship slamming in waves is reviewed from the point of view of someone working at a ship research institute. Such an institute is confronted with rather practical questions regarding the acceptability of certain design parameters such as the acceptable amount of bow flare angle for use at sea. The importance of these questions is illustrated by noting that a...

Results of analytical modeling and computer simulation of wave-induced structural loadings on ships i!lwaves is presented! with consideration ~f bow flare slamming, bottom impact slamming, and springing. Consideration is given only to the case of head seas, and the outputs are obtained in the form of time histories due to the nature of the nonllnearities and the nonstationary propert~es associa...

The slamming phenomenon is a violent impact of the hull of a ship on the free surface of the sea. This loading case is particularly difficult to modelize for several reasons: first of all, the wet surface of the hull is an unknown; then a coupling with the springing (flexibility of the ship) is very complex and finally the interaction with the waves (even if the eigenfrequencies of the structur...

• Maximum speed in a seaway: 'involuntary' speed reduction due to added resistance in waves and 'voluntary' speed reduction to avoid excessive motions, loads etc. • Route optimization (routing) to minimize, e.g., transport time, fuel consumption, or total cost. • Structural design of the ship with respect to loads in seaways. • Habitation comfort and safety of people on board: motion sickness, ...

The bow flare slamming load was studied by using the software Ls-dyna. A coupling finite element model including air, water and 3d established. Flare pressure picked up from in order to discuss relation between velocity as well distribution rule of different entry angle along length height ship.

Maritime structures were traditionally designed for static maximum loads (design loads). However, ship and offshore structures are very much subject to dynamic loads, coming from, Fig.1: propellers and diesel engines excite elastic vibrations in local structures. The number of load cycles is usually much higher than for those due to seaways. Seaways excite local changing pressures. Typical freq...