技术咨询小组对使用过渡周期和其他参数的疲劳裂增长方法的结构完整性审查进行了技术咨询
Anthony Horn1, Peter James1, Peter Budden2
1Amentum Services Inc, Warrington, Cheshire, UK.
概括
TAGSI审查了疲劳裂生长计算,发现Delta-J参数适合弹性-塑性分析. 他们还建议对RSE-M f(R) 期进行改进,并验证了一种新的过渡性评估方法.
科学领域:
- 结构完整性 结构完整性
- 核工程 核工程是指核工程.
- 材料科学 材料科学 材料科学
背景情况:
- TAGSI为高完整性组件 (HIC) 提供同行评审.
- 电力发电基金 - 核服务公司要求对疲劳裂增长 (FCG) 计算优化进行专家审查.
- 关键领域包括数值方法,R比函数和过渡分析.
研究的目的:
- 对FCG计算的提议优化进行审查.
- 提供有关FCG分析相关参数基础的洞察力.
- 为了评估数值方法,R-ratio术语,以及一种新的短暂排序方法.
主要方法:
- 由独立专家进行同行评审.
- 对FCG的弹性-塑性有限元素 (FE) 方法的分析.
- 对RSE-M R-ratio项f (R) 的评价及其对Delta-Keff的影响.
- 评估工厂运行条件 (POC) 方法用于暂时订单和配对.
主要成果:
- 德尔塔-J参数被认为与英国对弹性-塑料FCG的指导一致,并注意到考虑因素.
- RSE-M f(R) 术语的基础需要进一步的文档和开发.
- 时间顺序的POC方法 (包括POC-mod) 被认为是适合暂时订单的,一些非保守主义必须逐个评估.
结论:
- TAGSI的审查证实了Delta-J在弹性-塑性体制中用于FCG估计的实用性.
- 提出了建议,以提高对RSE-M f ((R) 术语的理解和应用.
- 在结构完整性评估中,POC方法为过渡性评估提供了一个可行的替代方案.
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