船艏横向框架对船艏碰撞性能的影响

在船舶碰撞中，撞击船艏部结构和被撞船船侧结构都会发生损伤变形．为了了解横向框架对船艏结构的损伤形态、碰撞力及能量耗散的影响，利用非线性有限元仿真程序MSC／DYTRAN对有横向框架和无横向框架的某艏部结构的碰撞特性进行了比较．结果发现，横向加强材会限制船艏外壳及甲板的变形模式，以至于显著地影响到整个船艏结构的破坏特征、碰撞力和能量吸收．在进行碰撞分析时不可忽略．

Effect of Transverse Frame to Collision Character of Ship Bow

The comparative study of collision characteristic between bow structures with transverse frames and bow structures without transverse frames was developed by using of the nonlinear finite element program MSC/DYTRAN for realizing the effects that transverse frame act to damage mode, collision force of ship bow structures and energy dissipation. It was discovered that the distortion modes of ship hull and decks are restricted by the transverse frames, which also evidently act important effect to the damage mode of whole ship bow structures,collision force and energy dissipation. So it can not be omitted in collision calculation.