3차원 전선 유탄성 해석을 위한 경계요소법과 유한요소법 연성에 관한 연구

This paper considers the ship structural hydroelasticity problem in waves. The fluid and structural domains are analyzed by using a 3D Rankine panel method and a 3D finite element method, respectively, and those are fully coupled in time-domain by means of the fixed point iteration scheme, and a relaxation scheme is applied to increase the convergence speed. In order to validate the developed program, the natural frequency, the motion responses, and the time histories of stress of barge are computed based on the present method, and those are compared with the numerical results computed by the beam-based hydroelasticity program, WISH-FLEX. Moreover, 6500 TEU containership is taken into account for the real ship application. Based on the computational results, it is found that the present method provides reliable solutions to the ship hydroelasticity problem.