선미파, 선미사파를 받는 선박의 과도 운동 추정에 영향을 미치는 인자의 민감도 해석

Abstract

Recently, researches to find rational mathematical model for prediction of capsizing have been progressed by ITTC. Lee(1997) developed a mathematical model which describes 6 DOF transient motions, such as capsizing, of a ship in regular waves. In this study, a mathematical model for prediction of capsizing in following and quartering seas is developed based on Lee’s model. And factors affecting prediction of capsizing are analyzed through comparing simulation results with experimental results. Present simulation results are compared with ITTC bench mark test results. In rolling tests in beam seas and free runs in stern quartering seas, capsizing events are predicted well. But calculated roll angle is larger than experimental one. Nonlinear manoeuvring coefficients don’t affect the prediction of capsizing events.