带点蚀型金属损失的压力容器的剩余强度:第1部分

J. J. Trujillo-Tadeo, J. González-Velázquez, D. Rivas-López
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引用次数: 0

摘要

这项工作提出了一种评估程序,用于确定具有点蚀型金属损失的压力容器中的剩余强度,通过根据点蚀密度,点蚀深度和使用有限元分析模拟组件的内部压力开发完整性图。仿真结果表明,符合Gumbel Max分布的点蚀密度和深度是决定零件机械完整性的主要因素;由于这些变量在应力状态下呈现协同行为,45%的点蚀损伤区域产生的应力集中至少是无缺陷部件的10倍。由于在有限元模拟中考虑了点蚀的几何效应和群体效应,提出的评估程序便于对存在点蚀损伤的部件进行评估。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Remaining Strength in Pressure Vessels With Pitting Type Metal Loss: Part 1
This work proposes an assessment procedure for the determination of the remaining strength in pressure vessels with pitting type metal loss, trough the developed of integrity diagrams according to the pitting density, pitting depths and the internal pressure of the component using Finite Element Analysis simulations. The simulations results indicate that the pitting density and depths according to the Gumbel Max Distribution, are the main factors that determine the mechanical integrity of the component; where 45% damaged area by pitting generates a stress concentration that multiplies at least ten times the stress compared with components without defects, since these variables present a synergistic behavior in the stress state. The proposed assessment procedure facilitates the evaluation of the components that present pitting corrosion damage, due to the geometric and population effect of the pitting is considered in the finite element simulation.
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