Pages 223-230
Recently many studies on the elastic response behavour of very large floating structures have been done. Such a very large structure is relatively flexile compared with existing floating structures like large ships. For estimating the dynamic response behaviour of the structure, it is important to consider the deflection wave propagation based on fluid-structure interaction analysis. This paper deals with the dynamic response of a pontoon type floating structure in regular waves experimentally. In order to explain fluid field under the pontoon type floating structure in regular waves, it is necessary to know the elastic response or deflection behaviour of the structure which is the boundary condition of fluid field. By measuring bending strain time history on a pontoon type floating model in regular waves, the dispersion relation of deflection wave is experimentally investigated. From comparison between above experimental results and those obtained in theoretical analyses, the validity of the estimation method considering the deflection wave propagation is also discussed.
