用水弹性方法分析船型对波浪载荷的影响

An Analysis of the Influence of the Ship Type on the Wave Load with the Hydroelastic Method

建立了计算船舶波浪外载荷的水弹性有限元模型，将船体梁作为修正的Ｔｉｍｏｓｈｅｎｋｏ梁，受力分析采用切片理论．避免了由于船体干模态与流体动力不正交引起的弊端．并分析船型对波浪载荷的影响．

The hydroelastic theory is employed to calculate the wave load of a ship. The hydroelastic finite element method is developed to overcome the difficulty arising from the fact that the modes of the dry hull are not orthogonal to the hydrodynamic force. The ship hull is taken as a modified Timoshenko beam and the hydrodynamic forces are divided into inertia, resistance and load force. The dynamic element equations are solved by Wilson θ method. The influence of the ship type on the wave load is discussed.