沈阳航空航天大学学报2026，Vol.43Issue(2)：25-35,11.DOI:10.3969/j.issn.2095-1248.2026.02.004
基于全尺寸仿真方法的涡轮叶片蠕变寿命预测
Prediction of turbine blades creep life based on full-scale simulation method
摘要
Abstract
The prediction of creep life for turbine blade relies on simulated blade temperature and stress data.However,simulations often simplify the entire turbine disk to a single blade,leading to inaccurate results.In order to investigate the validity of simplified single-blade models and enhance the accuracy of blade creep life prediction,a study on the creep life of turbine blades based on full-scale simulation method was conducted.First,full-scale simulation method for the turbine disk and a simplified single-blade model were established.Then,the blade temperature and maximum principal stress were calculated using the hybrid thermal-fluid-solid coupling method.Finally,the comprehensive equation of thermal strength parameters was employed to predict the creep life of the blade.The results indicate that the relative error in temperature between the single-blade model and the full-scale model does not exceed 2%;the relative error in maximum principal stress between the two is within 8%;however,the relative error in prediction of creep life between them reaches as high as 712.93%.The single-blade model predicts lower temperatures and maximum principal stresses,resulting in a significantly overestimated creep life.These findings demonstrate the necessity of employing a full-scale model to analyze the creep life of turbine blades and lay a foundation for the accurate prediction of their creep life.关键词
涡轮叶片/蠕变寿命/全尺寸仿真方法/混合流固耦合法/热强参数综合方程Key words
turbine blade/creep life/full-scale simulation method/hybrid fluid-solid coupling method/comprehensive equation of thermal strength parameters分类
航空航天引用本文复制引用
武威,胡春平,姚婷,姚玉东,田晶..基于全尺寸仿真方法的涡轮叶片蠕变寿命预测[J].沈阳航空航天大学学报,2026,43(2):25-35,11.基金项目
辽宁省国际科技合作计划项目资助项目(项目编号:2025JH2/101900009). （项目编号:2025JH2/101900009）
