Study on Motions of a Floating Body under Composite External Loads

Abstract

In the field of marine engineering, various types of floating bodies have been designed. Motions of them should be treated taking account of the effect of not only ocean waves but also external systems such as mooring lines, pipe lines, cables, or adjacent floating bodies.Fundamental and systematic studies were carried out on motions of a floating body under composite external loads. Widely and commonly applicable prediction method was developed to predict them.In order to verify the applicability of the prediction method, model experiments were carried out for the several typical cases of floating bodies under composite external loads. Fairly good agreements could be obtained between calculated and measured values, so that the availability of present prediction method was confirmed by experiments.Where composite external loads can be approximated by linearized dynamic system, present method will be usefully applied to the design of various type of floating bodies under composite external loads.