【摘要】 采用直接计算法对16万m3LNG船的整船强度进行评估.建立了整船结构有限元模型,基于三维源汇分布方法并利用北大西洋波浪散布图对波浪垂直弯矩进行长期预报,得到LNG船在典型装载工况下的设计波参数,完成了LNG船在设计波中的整体有限元分析.计算结果可以为LNG船的整体强度评估、船体结构优化提供有效依据,评估结果对同类LNG船的设计开发具有指导意义.更多还原

【Abstract】 The overall strength assessment of a 160000m3 LNG ship structure was carried out based on direct computation. First, a finite element model of the ship structure was built. The extreme vertical wave bending moments were calculated based on 3-D hydrodynamic and long term prediction using North Atlantic scatter diagram. The design wave parameters were determined for typical load condition. The overall strength was estimated in design wave load. The results showed are effective for strength assessment of LNG ship structures and structural optimization. The assessment results can be a reference in the design and development of LNG ship structures更多还原