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机械工程学报

机械工程学报 ›› 2017, Vol. 53 ›› Issue (7): 173-179.doi: 10.3901/JME.2017.07.173

• 数字化设计与制造 • 上一篇    下一篇

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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

王根1,2, 林建平1,2, 孙鑫1,2, 金晶3   

  1. 1. 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 上海 201804；
    2. 同济大学机械与能源工程学院 上海 201804；
    3. 上海振华重工(集团)股份有限公司 上海 200125
  • 出版日期:2017-04-05 发布日期:2017-04-05
  • 作者简介:

    王根，男，1990年出生。主要研究方向为汽车NVH性能及车身轻量化技术。

    E-mail：wanggen1990@163.com

    林建平(通信作者)，男，1958年出生，博士，教授，博士研究生导师。主要研究方向为板料成形与汽车轻量化技术。

    E-mail：jplin58@tongji.edu.cn

Lightweight Optimization Design of Jack-up Platform’s Cantilever Based on the Maximum Normal Stress

WANG Gen1,2, LIN Jianping1,2, SUN Xin1,2, JIN Jing3   

  1. 1. Shanghai Key Laboratory of Vehicle Aerodynamics and Vehicle Thermal Management Systems，Tongji University， Shanghai 201804;
    2. Mechanical and Energy Engineering College， Tongji University， Shanghai 201804;
    3. Shanghai Zhenhua Heavy Industry Co.， Ltd.， Shanghai 200125
  • Online:2017-04-05 Published:2017-04-05

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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。

关键词: 变截面, 轻量化, 悬臂梁

Abstract:

The cantilever is an important part of jack-up drilling platform. It improves the efficiency and flexibility of drilling operation. The traditional cantilever’s finite element model is built which is selected as the research object, and the bending performance is simulated. Besides, analytical formula is used to analyze the affection laws of the cantilever’s overhung distance on the bending moment distribution; the maximum normal stress is taked as the constraint and the girder’s design height along the overhung distance is derived. Based on this method, the cantilever as variable cross-section is designed. The result shows that the optimized cantilever’s weight can be reduced by 22.903 t, its bending performance improves, achieving the goal of lightweight.

Key words: lightweight, variable cross-section, cantilever

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