中国机械工程2017，Vol.28Issue(12)：1442-1448,1467,8.DOI:10.3969/j.issn.1004-132X.2017.12.009
复杂载荷作用下压气机叶片疲劳寿命数值分析
Numerical Analyses on Fatigue Life for Compressor Blades under Complex Loads
摘要
Abstract
In order to improve service life of blades,three blade models were built based on re-verse engineering to calculate stress distribution and fatigue life of blades under complex loadings. Considering the influence of centrifugal loads and aerodynamic loads,stress distributions of compres-sor blades were solved under complex loads.Moreover,the fatigue limit and life prediction model pa-rameters were defined through the fatigue tests,and the fatigue life of compressor blades under the typical working conditions were predicted by nonlinear continuous damage model.Comparing the differences of stress values and fatigue life among three models,results show that the restoration de-gree of blade geometrical features for the calculation model must be considered when numerical calcu-lations were carried out for blades with complex torsional characteristics.关键词
航空发动机/压气机叶片/逆向建模/复杂载荷/疲劳寿命Key words
aero-engine/compressor blade/reverse modeling/complex load/fatigue life分类
航空航天引用本文复制引用
张俊红,刘萌,付曦,寇海军,林建生..复杂载荷作用下压气机叶片疲劳寿命数值分析[J].中国机械工程,2017,28(12):1442-1448,1467,8.基金项目
高等学校博士学科点专项科研基金资助项目(20130032130005) （20130032130005）
天津市科技支撑计划资助重点项目(13ZCZDGX00200) （13ZCZDGX00200）
