文献类型：会议论文

英文题名：RELIABILITY- BASED SAFETY FACTOR FOR PRESSURIZED COMPONENTS CONSIDERING CREEP-FATIGUE FAILURE

作者：Wang, Xiaoxiao[1];Chen, Haofeng[1,2];Luan, Weiling[1]

机构：[1]East China Univ Sci & Technol, Shanghai, Peoples R China;[2]Univ Strathclyde, Glasgow, Lanark, Scotland

会议论文集：2024 Pressure Vessels and Piping Conference

会议日期：JUL 28-AUG 02, 2024

会议地点：Bellevue, WA

语种：英文

外文关键词：safety factor; thermal mechanical fatigue; LMM; structural integrity; reliability analysis

摘要：Currently, the structural assessment procedures mainly rely on deterministic analysis considering the bounding values of the design parameters, and by adopting a safety factor, sufficient strength reserve is maintained to satisfy the uncertain factors. This safety factor is determined by the extensive expert experience, with redundant conservativeness included more or less. In this study, the reliability-based safety factor is developed by the established probabilistic Linear Matching Method framework (pLMM), to deal with the engineering component assessments under thermal-mechanical loads, where the uncertainty of design conditions is quantitatively taken into consideration. This risk management-based evaluation strategy is able to facilitate the design robustness of critical infrastructures in terms of Low Cycle Fatigue and Creep- Fatigue failures.