基于反向方法的船体冰载荷研究（英文）

Research of Ice-induced Load on a Ship Hull based on an Inverse Method

船舶碰撞海冰引起的冰载荷分布是十分复杂的。文章选取Thikhonov正则化这一反向方法,根据极地科考补给船S.A Agulhas II号于2013-2014年间南极航行时实测的数据,分析得到了船体艉肩部的冰载荷。通过应用三种独立的冰载荷离散方式来模拟海冰的自然特性,在有限元中得到模型的影响矩阵,并应用Matlab对Thikhonov正则化方程进行了优化。研究结果表明,反向方法可以克服数据处理过程中的不适定性,并计算得到船体冰载荷。

The distribution of ice-induced load on a ship hull is sophisticated. In this paper, Thickhonov regularization was selected as the inverse method to determine the load on the stern shoulder with full scale measurement data recorded on board PSRV S.A. Agulhas II during a voyage in Antarctica in 2013-2014. To simulate the nature ice features, three kinds of individual discretization were considered to describe the influence matrix of the model in FEM. Furthermore, the Thikhonov regularization equation was optimized with Matlab. The results demonstrate that the inverse method could be applied to overcome the ill-posed problem and solve the ice-induced load on a ship hull.