This study describes an application of a Daubechies wavelet function to analyze measured ship model data. The records of a self-propelled, flexible model of the S175 container ship moving in waves are analyzed by FFT and wavelet methods. It is shown that the high frequency component of the recorded rigid body motions can be omitted without substantially affecting the main features of the data s...

Due to the complex fluid interference between outrigger and main hull, it is difficult predict trimaran load fluctuation accurately in different marine environments. Therefore, a time-domain Rankine method developed improve accuracy of prediction. This successfully adds nonlinear components simulation by taking into account factors such as instantaneous hull wetted surface, steady ship waves, g...

Achieving optimal efficiency, good performance, and cost-effectiveness is the main challenge in ship design. Using a bulbous bow part of attaining an excellent design to reduce drag dynamic load caused by waves slamming. The commonly determined shape geometric based on laboratory testing or computer optimization. This article compares probability slamming into catamaran NPL hull without with bo...

Violent fluid motions, high speed marine vehicles and Computational Fluid Dynamics (CFD) are selected as main topics. Violent fluid motions deal with green water on deck, sloshing and slamming. Slamming involves many physical effects. When analyzing slamming, one must always have the structural reaction in mind. This necessitates that hydroelastic effects are considered. Many hydrodynamic pheno...

We develop a hydroelastic model based on a {3,2}-order sandwich composite panel theory and Wagner’s water impact theory for investigating the fluid–structure interaction during the slamming process. The sandwich panel theory incorporates the transverse shear and the transverse normal deformations of the core, while the face sheets are modeled with the Kirchhoff plate theory. The structural mode...