Estimation of the Motions of Semisubmersibles in Combined Heel and Trim Condition by the Application of Boundary Element Method

概要

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Motion of offshore structure in damaged condition is important from the view point of safety. For the response estimation of damaged condition, some research works are reported, but most works treat only heeled or trimmed condition. The combined heeled and trimmed condition seems not to be treated.One reason is that there are some considerations that even in damaged condition, the frequency response functions will not be changed largely and another reseason will be that this condition is very complicated in space and not only calculation but also experiments are very difficult.But by experiments in damaged condition, it is found out that some responses are changed largely within the range of ocean wave frequency.Here, we challenged this problem and a computer program was developed in order to estimate linear (infinitesimal) motion responses of floating structures especially in combined largely heeled and trimmed condition in waves and compared with experiments. Calculated results showed relatively good coincidents with experiments.
社団法人日本船舶海洋工学会の論文