热力透平2024，Vol.53Issue(2)：71-75,101,6.DOI:10.13707/j.cnki.31-1922/th.2024.02.001
汽轮机部件多轴蠕变-疲劳寿命评估方法
Multi-Axial Creep and Fatigue Life Assessment Method for Steam Turbine Components
陈钢 1冯淼林2
作者信息
- 1. 上海电气电站设备有限公司汽轮机厂,上海 200240
- 2. 上海交通大学 船舶海洋与建筑工程学院,上海 200240
- 折叠
摘要
Abstract
High-temperature components of steam turbine,such as casing and rotor,are subject to fatigue damage and creep damage during operation.There is interaction between the damage mechanisms,and it is necessary to evaluate the coupling of the two.A unified visco-elastic-plastic cycle material constitutive model was proposed based on Ohno-Wang cycle plastic model.A multiaxial creep-fatigue coupling analysis program was developed using UMAT in ABAQUS.The program was used to evaluate the multiaxial creep-fatigue life of high-temperature rotor in a 1 000 MW ultra-supercritical unit,and the results showed that the most damaged part located at the root groove of the first stage rotating blade.The research results can provide technical assurance for life assessment of high-temperature components in steam turbines.关键词
超超临界汽轮机/多轴蠕变/疲劳损伤/黏弹塑性循环本构模型/用户子程序Key words
ultra-supercritical steam turbine/multiaxial creep/fatigue damage/visco-elastic-plastic cycle constitutive model/user subroutine分类
能源科技引用本文复制引用
陈钢,冯淼林..汽轮机部件多轴蠕变-疲劳寿命评估方法[J].热力透平,2024,53(2):71-75,101,6.
