ユニット連結型浮遊式構造物の流体連成振動のモード解析と実験

概要

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Two-dimensional formulation for analyzing the fluid-coupled free vibration of unit-linked floating structure is presented by combining a spring-mass model for structure and a boundary element model for fluid domain. The wet-mode natural frequencies and mode shapes are obtained from the equation of motion including hydrodynamic added mass and damping. Numerical calculations are carried out for various numbers of unit. Based on the analytical results, the effects of fluid-structure interaction, link flexibility and mooring stiffness on the overall dynamic behavior are discussed. To validate the analytical model, moreover, a series of vibrational experiments are performed by an impact hammer test in water tank. Through the comparative study, it is shown that the analytical results are in good agreement with the experimental results.
一般社団法人日本建築学会の論文
1995-03-20