基于有限元方法的船首底部结构砰击强度分析

船艏底部作为整船中的重要受力区域,船舶航行时,其与波浪会发生相对碰撞,即产生砰击现象,从而对船体的结构安全造成隐患。本文以某型半潜运输船为例,结合中国船级社(CCS)规范,根据Ochi-Mottor理论进行砰击压力极值计算,并采用有限元方法对该型船舶艏部区域的结构强度进行分析。

Slamming Strength Analysis of Bow Bottom StructureBased on FEM

When a ship sails in sea waves, relative collisions occur between the bottom area of bow and the waves, that is slamming. As an important stress area in the whole ship, the bow bottom is related to the structural safety of the whole ship. This paper takes semi-submersible ship as an example,based on the code of China Classification Society(CCS).According to Ochi-Motor theory, the extreme of slamming pressure is calculated, and the structural strength of the bow bottom is analyzed by finite element method.