A first-order second-moment approach to systems fatigue reliability of offshore structures

Y. Hu; B. Chen

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A first-order second-moment approach to systems fatigue reliability of offshore structures

机译：海上结构系统疲劳可靠性的一阶二阶方法

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摘要

A method to evaluate the probability of failure of a failure path leading to fatigue collapse of an offshore structure is presented. The failure path is modeled by a number of failure elements, which represent the fatigue-sensitive joints in the structure, connecting in parallel and failing in sequence. The probability of failure of the parallel system is calculated by using first-order second-moment method. The formulation is further improved by considering the probability of occurrence of a specified sequence in which the failure elements fail. The method can be employed both in searching for important failure paths and in evaluating the probability of failure of the whole structure in systems fatigue reliability analysis of offshore structures.

机译：提出了一种评估导致海上结构疲劳破坏的失效路径失效概率的方法。失效路径由许多失效元素建模，这些失效元素表示结构中的疲劳敏感关节，它们并行连接并依次失效。并行系统发生故障的概率是使用一阶第二阶矩法来计算的。通过考虑失效元件失效的特定顺序出现的可能性，可以进一步改进该公式。该方法既可用于寻找重要的失效路径，又可用于评估海上结构系统疲劳可靠性分析中整个结构的失效概率。

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《Journal of offshore mechanics and arctic engineering》 |1995年第2期|p.105-112|共8页
作者
Y. Hu; B. Chen;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类施工机械与设备;
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A first-order second-moment approach to systems fatigue reliability of offshore structures

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