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Performance assessment of damaged ship hulls

机译：受损船体的性能评估

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摘要

In this paper, a probabilistic framework for performance assessment of ship hulls under sudden damage accounting for different operational conditions is presented. Grounding and collision accidents are considered as sudden damage scenarios. The combined effects of sudden damage and progressive deterioration due to corrosion are investigated. The performance of ship hull is quantified in terms of ship reliability and robustness. The longitudinal bending moment failure is considered as the limit state. The longitudinal bending moment capacities of the intact and damaged ship hulls are assessed using an optimization-based version of incremental curvature method. The wave-induced loads for different ship speeds, headings and sea states are identified based on hydrodynamic analysis and the ship performance under different operational conditions is investigated. The approach is illustrated on an oil tanker. Under different operational conditions the reliability index associated with the intact and damaged ship hull and the robustness index associated with damage scenarios are presented in polar plots. In addition, aging effects on ship reliability are investigated.
机译：本文提出了一种概率框架，该框架评估了在不同操作条件下突然受损的船体性能。接地和碰撞事故被认为是突然损坏的情况。研究了由于腐蚀导致的突然损坏和逐渐恶化的综合效果。船体的性能根据船舶的可靠性和坚固性进行量化。纵向弯矩破坏被认为是极限状态。使用基于优化的增量曲率方法评估完整和受损船体的纵向弯矩能力。基于流体动力学分析，识别了不同船速，航向和海况下的波浪载荷，并研究了不同工况下的船舶性能。该方法在油轮上进行了说明。在极坐标图中，在不同的运行条件下，与完好无损的船体有关的可靠性指标和与损坏情况有关的稳健性指标。此外，还研究了老化对船舶可靠性的影响。

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  • 来源
    《Ocean Engineering》 |2013年第1期|65-76|共12页
  • 作者

    Duygu Saydam; Dan M. Frangopol;

  • 作者单位

    Department of Civil and Environmental Engineering, Engineering Research Center for Advanced Technology for Large Structural Systems (ATLSS Center), Lehigh University, 117 ATLSS Dr., Bethlehem, PA 18015-4729, USA;

    Department of Civil and Environmental Engineering, Engineering Research Center for Advanced Technology for Large Structural Systems (ATLSS Center), Lehigh University, 117 ATLSS Dr., Bethlehem, PA 18015-4729, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ships; Structural reliability; Sudden damage; Deterioration; Reliability index; Operational conditions;

    机译：船舶;结构可靠性;突然损坏;恶化;可靠性指标;运行条件;

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