Finite Element Simulation on Thermal Fatigue of a Turbine Blade with Thermal Barrier Coatings

查看全文 作　　者：[1,2]L.Yang;[1,2]Q.X.Liu;[1,2]Y.C.Zhou;[1,2]W.G.Mao;[3]C.Lu

机构地区：[1]Key Laboratory of Low Dimensional Materials & Application Technology(Ministry of Education),Xiangtan University;[2]Faculty of Materials,Optoelectronic & Physics,Xiangtan University;[3]Department of Mechanical Engineering,Curtin University

出　　处：《Journal of Materials Science & Technology》索引2014年第30卷第4期,共10页

基　　金：supported by the National Natural Science Foundation of China(Nos.11002122,51172192,11272275 and 11002121);the Natural Science Foundation of Hunan Province, China(No.11JJ4003);the Key Project of Scientific Research Conditions in Hunan Province,China(No.2012TT2040) 摘　　要：In this paper,a finite element model was developed for a turbine blade with thermal barrier coatings to investigate its failure behavior under cyclic thermal loading.Based on temperature and stress fields obtained from finite element simulations,dangerous regions in ceramic coating were determined in terms of the maximum principal stress criterion.The results show that damage preferentially occurs in the chamfer and rabbet of a turbine blade with thermal barrier coatings and its thermal fatigue life decreases with the increase of thermal stress induced by high service temperature. 关键词：有限元模拟热疲劳寿命热障涂层涡轮叶片有限元模型最大主应力行为发展陶瓷涂层

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Finite Element Simulation on Thermal Fatigue of a Turbine Blade with Thermal Barrier Coatings

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