重庆大学学报2025，Vol.48Issue(12)：1-11,11.DOI:10.11835/j.issn.1000-582X.2024.262
基于三参数威布尔分布的锆合金疲劳寿命高准确度预测模型构建方法
A method for constructing a high-accuracy prediction model for zirconium alloy fatigue life based on the three-parameter Weibull distribution
摘要
Abstract
During the operation of nuclear reactors,zirconium alloy claddings are subjected to significant cyclic stresses,necessitating an accurate evaluation of their fatigue properties essential for preventing structural failure.This study proposes a high-accuracy prediction method for the fatigue life of zirconium alloys by employing fatigue test data from alloys subjected to two distinct heat-treatment conditions.A three-parameter Weibull distribution model was established using the probabilistic weighted moments method to construct reliability-stress-number(R-S-N)cycles curves.These curves were rigorously compared and validated against those obtained from the traditional Basquin model.The findings indicate that the R-S-N curves derived from the three-parameter Weibull distribution demonstrate superior fitting accuracy and significantly outperform the conventional model.This advanced modeling approach provides a reliable and effective means for predicting the fatigue behavior of zirconium alloys,offering significant implications for the structural design and safety assessment of nuclear reactors.关键词
锆合金/S-N曲线/威布尔分布/疲劳性能/寿命评估Key words
zirconium alloy/S-N curves/Weibull distribution/fatigue performance/lifespan evaluation分类
矿业与冶金引用本文复制引用
HU Shuwei,QI Tongbaihui,GUO Shan,QIU Xi,YIN Hongbu,LAN Xun,GAO Shixin,XIN Yong..基于三参数威布尔分布的锆合金疲劳寿命高准确度预测模型构建方法[J].重庆大学学报,2025,48(12):1-11,11.基金项目
四川省自然科学基金资助项目(2023NSFSC0979) （2023NSFSC0979）
国家重点研发计划资助项目(2022YFB1902400). Supported by Natural Science Foundation of Sichuan Province(2023NSFSC0979)and the National Key Research and Development Program of China(2022YFB1902400). （2022YFB1902400）
