Abst'/> Effect of uncertain factors on the hull girder ultimate vertical bending moment of bulk carriers
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Effect of uncertain factors on the hull girder ultimate vertical bending moment of bulk carriers

机译：不确定因素对散货船船体梁极限竖向弯矩的影响

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摘要

AbstractThis paper focuses on the effect of initial imperfections and corrosion wastage on the age related strength degradation of bulk carriers. At the beginning, the initial imperfections including initial distortions and residual stresses, are employed to assess the ultimate bending moment reduction. Then, the effect of thickness degradation due to corrosion wastage on the ultimate hull girder strength is investigated. Finally, the combination of initial imperfections and corrosion wastage is considered to evaluate the residual hull girder strength. To do that, the initial imperfections of the unperfected structures and a corrosion rate estimation model for bulk carriers are introduced. A simplified method is also proposed to determine the ultimate vertical bending moment of ship hull girder subjected to initial imperfections and corrosion wastage. Additionally, the design and construction considerations for bulk carriers are made.Highlights•The effect of the initial imperfections on the ultimate bending moment.•The effect of the corrosion wastage on the ultimate bending moment.•The effect of initial imperfections with corrosion wastage on the ultimate bending moment.•The point of regulation dissatisfaction during the service time of bulk carriers.
机译： 摘要 本文着眼于初始缺陷和腐蚀损耗对与散装船龄有关的强度退化的影响。首先，采用包括初始变形和残余应力在内的初始缺陷来评估极限弯矩的减小。然后，研究了由于腐蚀浪费导致的厚度降低对船体梁极限强度的影响。最后，考虑初始缺陷和腐蚀损耗的组合来评估船体残余梁的强度。为此，引入了未完善结构的初始缺陷和散装船的腐蚀速率估计模型。还提出了一种简化的方法来确定承受初始缺陷和腐蚀损耗的船体梁的极限垂直弯矩。此外，还考虑了散货船的设计和构造注意事项。 突出显示 • 初始缺陷对极限弯矩的影响。 • 腐蚀损耗对极限弯矩的影响。 < ce：list-item id =“ u0020”> • 腐蚀损耗的初始缺陷对最终弯曲的影响时刻。 • The散货船服务期间的监管点不满意。

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  • 来源
    《Ocean Engineering》 |2018年第15期|161-168|共8页
  • 作者

    Tuyen Vu Van; Ping Yang; Tuyen Doan Van;

  • 作者单位

    School of Transportation, Wuhan University of Technology,Faculty of Shipbuilding, Vietnam Maritime University;

    School of Transportation, Wuhan University of Technology,Key Laboratory of High Performance Ship Technology (Wuhan University of Technology), Ministry of Education;

    School of Transportation, Wuhan University of Technology,Faculty of Shipbuilding, Vietnam Maritime University;

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  • 正文语种 eng
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  • 关键词

    Initial imperfections; Corrosion wastage; Ultimate strength; Ship hull girder;

    机译：初始缺陷;腐蚀损耗;极限强度;船体梁;

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