中国电机工程学报2011，Vol.31Issue(26)：97-102,6.
应变场强法在涡轮盘-片结构寿命预测中的应用
Application of Strain Field Intensity Approach for Life Prediction in Turbine Disc-blade Structures
摘要
Abstract
As an accurate method for predicting structural fatigue life under random loads, field intensity approach deserves foundation research. According to the basic theories of field intensity approach and the fatigue testing dates of smooth and notched specimens of the given turbine blade material, the equations of the strain field intensity and the damage field radii of the material were obtained by simulating the tests of notched specimens with finite element method. Then the dynamic thermo-elastic-plastic finite element analysis of the disc-blade structures was completed, and the strain field intensity of the dangerous part of the structures was calculated. Finally the fatigue life of the disc-blade structures was gained according to the strain-life curves of the blade material. The method is reasonable and the calculation process is clear, also the equations of the field intensity are simple. Thus they serve as good references to the fatigue life prediction of structures in complicated stress condition.关键词
应变场强法/涡轮盘-片/寿命预测/有限元分析/疲劳Key words
strain field intensity approach/turbinedisc-blade/life prediction/finite element analysis/fatigue分类
能源科技引用本文复制引用
彭茂林,杨自春,曹跃云..应变场强法在涡轮盘-片结构寿命预测中的应用[J].中国电机工程学报,2011,31(26):97-102,6.基金项目
总装“十一五”预研基金项目（513270301) （）
武器装备预研基金项目（9140A2705叭09JB1112). （）
