基于最大正应力的自升式平台悬臂梁框架轻量化优化设计

发布时间：2018-02-28 17:51

本文关键词： 悬臂梁变截面轻量化　出处：《机械工程学报》2017年07期 　论文类型：期刊论文

【摘要】：悬臂梁是自升式钻井平台的重要组成部分,提高了海洋平台钻井效率和钻井灵活性。以传统型悬臂梁为研究对象,建立有限元模型,对其抗弯性能仿真分析。同时,从理论上以解析公式分析悬臂梁作业状态下悬挑距离对其弯矩分布的影响规律;以最大正应力为约束,推导悬臂梁两侧主梁设计高度随悬挑距离变化规律,对悬臂梁进行变截面设计,验证结果表明,优化后悬臂梁重量减轻22.903 t,同时抗弯性能有所提升,达到了轻量化的效果。
[Abstract]:Cantilever beam is an important part of jack-up drilling platform, which improves drilling efficiency and drilling flexibility of offshore platform. Taking the traditional cantilever beam as the research object, the finite element model is established, and the bending performance of the cantilever beam is simulated and analyzed. The influence of cantilever distance on the bending moment distribution of cantilever beam is analyzed theoretically by analytical formula, and the design height of main beam on both sides of cantilever beam is deduced with the maximum normal stress as constraint. The variable section design of the cantilever beam is carried out. The results show that the weight of the cantilever beam is reduced by 22.903t, and the bending resistance is improved, which achieves the effect of lightweight.
【作者单位】：同济大学上海市地面交通工具空气动力与热环境模拟重点实验室;同济大学机械与能源工程学院;上海振华重工(集团)股份有限公司;
【分类号】：TE951

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