CAJ | 학술논문

结构在实际海况中入水受到多种载荷的共同作用,同时还伴随波浪作用的影响,因此该过程是一个强非线性的过程.针对结构在波、流中入水过程的特点,将入射波(波、流)引入非线性双渐进法,研究三维刚体圆柱体在波、流及波流联合作用下入水过程运动响应及姿态的变化,计算结果与试验结果符合得较好,非线性双渐进法适用于分析三维刚体波、流中入水问题. 结果表明在近波面附近,结构受波浪作用明显,入水相位、浪级、流速及波流速度矢量差异对结构入水运动速度及轨迹影响明显.
결구재실제해황중입수수도다충재하적공동작용,동시환반수파랑작용적영향,인차해과정시일개강비선성적과정.침대결구재파、류중입수과정적특점,장입사파(파、류)인입비선성쌍점진법,연구삼유강체원주체재파、류급파류연합작용하입수과정운동향응급자태적변화,계산결과여시험결과부합득교호,비선성쌍점진법괄용우분석삼유강체파、류중입수문제. 결과표명재근파면부근,결구수파랑작용명현,입수상위、랑급、류속급파류속도시량차이대결구입수운동속도급궤적영향명현.
During water entry of the structure in actual sea states, it will receive the interaction of a vari-ety of loads, as well as the influence of wave and stream action, so this is a strong non-linear process. Ac-cording to the characteristics of water entry of the structure, the incident wave and stream will be introduced to the nonlinear doubly asymptotic approximation method, so as to study the motion response and attitude change of 3D rigid cylindrical under wave and stream action during water entry. The calculation results fit with the test results well, this method is available for the analysis of water entry of 3D rigid body. The re-sults show that in the vicinity of wave surface, the wave affects the structure distinctly; phases of water en-try, wave scale, stream velocity and the differences of wave and stream velocities vector influence the speed, motion trajectory of the structure in water notably.