快艇在海浪中的运动和弯矩计算

The Computation of Motion and Bending Moment for the Speedboat in a Seaway

将铁摩辛柯梁理论与普通切片法结合起来，对具有任意剖面的快艇，建立规则波运动的非线性水弹性统一方程，然后用数值方法步进求解。对于不规则波中的运动，用时域分析方法预报了快艇的运动和弯矩，并以２１艇为例进行了计算，与刚性艇结果以及试验作了比较。

The nonlinear hydroelasticity equations of motion in regular waves for the speedboathaving an arbitrary shape of cross section are derived by combining the ordinary strip methodwith Timoshenko’s beam theory. The equations are solved step by step using the Runge-Kutta numerical integration method. For the motion in irregular waves,the motion responseand the bending moment applied at the boat girder are predicted with a time domain analysis.Take boat No. 21 as an example. The results by the hydroelasticity method and those calcu-lated by the rigid body assumption are compared. Experimental data obtained from tests car-ried out in regular and irregular waves show good agreement.