CAJ | 학술논문

纵浪中的参数横摇是船舶耐波性领域研究热点之一，而船舶在斜浪中航行时，横摇运动同时承受外激励作用和参数激励作用，在这种参强激励作用下，也可能导致船舶大幅横摇甚至倾覆。文章考虑船、波相对位置以及垂荡-纵摇-横摇运动耦合，提出一种计算船舶回复力及耦合运动的新方法。计算结果显示，船舶在斜浪规则波下的运动呈现明显的非线性变化规律，有必要考虑回复力随船、波相对位置的变化。
종랑중적삼수횡요시선박내파성영역연구열점지일，이선박재사랑중항행시，횡요운동동시승수외격려작용화삼수격려작용，재저충삼강격려작용하，야가능도치선박대폭횡요심지경복。문장고필선、파상대위치이급수탕-종요-횡요운동우합，제출일충계산선박회복력급우합운동적신방법。계산결과현시，선박재사랑규칙파하적운동정현명현적비선성변화규률，유필요고필회복력수선、파상대위치적변화。
When a ship sails in oblique seas, parametric rolling and the forced rolling by waves will happen at the same time, which makes the rolling angle increase fast, named as parametrically excited ship rolling. A solution to coupling ship motion equations of 3 degrees of freedom is made based on a new method to calculate restoring forces considering wave surface and ship motion. A conclusion is obtained that ship mo-tion in oblique sea shows strong nonlinearity and it is necessary to consider the variation of restoring force due to wave surface and ship motion.