ASME NH规范中应变限制合格准则的比较

Comparison of Strain Limit Acceptance Criteria in ASME NHCode

针对高温使用的核1级部件,概述ASME NH规范中6个基于弹性分析结果的应变限制合格准则的来源和演化过程,并从结构适用范围、载荷适用范围、温度适用范围、对应Bree图的限制区域和使用难易程度等角度对比分析这些合格准则的异同,以方便规范使用者选择合适的准则处理实际工程问题。

The paper explains the origin and evolution of six strain limit acceptance criteria based on elastic analysis results in ASME NH code for the nuclear Class 1 components in elevated temperature service,and compares and analyzes the similarities and differences of these criteria from the perspectives of applicable scopes in structure,load and temperature,and restricted areas corresponding to the Bree diagrams,and ease of use so as to facilitate the code users to select appropriate criteria for actual engineering solutions.