【作者】 潘志远；

【导师】 宋竞正；

【作者基本信息】 哈尔滨工程大学 ， 船舶与海洋结构物设计制造， 2003， 硕士

【摘要】 船舶在波浪中的运动响应及波浪载荷预报，对于船体结构有限元分析、可靠性分析及疲劳分析等是十分重要的。当今广泛采用的切片法满足了工程上所需要的精度要求，但一般都只能适用于正浮状态具有横向对称性的船舶。本文尝试对原有的切片法进行扩展，使之能够考虑到船体横倾影响，进而重新建立运动方程，求解处于横倾状态的船舶在波浪中的运动响应及剖面波浪载荷。 首先，本文建立船体横倾的模型，给出横倾后船体的静水力及质量矩阵的算法。然后，采用比例弧法对全剖面进行保角变换并在此基础上用多极展开法计算非对称剖面的辐射流场，进而采用切片理论合成全船的水动力系数并对FLOKSTRA集装箱船进行了考虑横倾影响的运动响应预报。最后，本文给出了处于横倾状态船体的剖面波浪载荷计算方法，并针对实船进行了相应的波浪载荷预报。更多还原

【Abstract】 Prediction of the motions and wave loads acting on ships sailing on the sea is very important to the FEM, the probability analysis and the fatigue analysis of ship structures. The Strip Theory can meet the demand of shipbuilding engineering. But the common method can only use on ships with lateral symmetry which is in the state of zero trim. This paper will present an improved method which can take account of the transverse inclination and predict the motions and wave loads of a ship in heel.Firstly, the model of ship with the sate of heel is developed and then the hydrostatic forces and mass matrix of such model is calculated. Secondly, proportional arc length method is used to conformal mapping process of asymmetry sections so as to solute the 2D radiation problem with the method of multipole expansion. On the basis of above, 3D hydrodynamic coefficients are given and motions of the container ship FLOKSTRA are predicted considering the initial heel. In the end, the calculation dealing with the sectional wave load acting on a ship in the state of heel is made.更多还原