API TR 579-A 2025 基于有限元分析的 2 级和 3 级裂纹评估参考应力解决方案开发

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Development of FEA-based

Reference Stress Solutions

for Level 2 and Level 3

Crack Assessments

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API TECHNICAL REPORT 579-A

FIRST EDITION, MAY 2025

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No reproduction or networking permitted without license from Accuris

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标签： #评估 #分析

摘要：

本技术报告聚焦于基于有限元分析方法，为API 579标准中的2级和3级裂纹评估提供参考应力解决方案的开发过程与最新成果。文档详细阐述了如何通过数值模拟技术，建立适用于含缺陷结构完整性评价的参考应力计算模型，以提升在复杂载荷与几何条件下裂纹驱动力计算的准确性和可靠性。内容涵盖有限元建模策略、边界条件设定、网格收敛性验证以及参考应力解的拟合与归一化方法，并针对典型工程案例进行了对比分析。该报告为工程技术人员在压力容器、管道及焊接结构等领域的服役适用性评价提供了科学依据和实用指导，有助于减少保守性假设

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API TR 579-A 2025 基于有限元分析的 2 级和 3 级裂纹评估参考应力解决方案开发

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