DocumentCode
232645
Title
Low cycle fatigue life prediction of steam turbine rotor based on a new CDM model
Author
Yongjian Sun ; Lisheng Hu
Author_Institution
Dept. of Autom., Shanghai Jiao Tong Univ., Shanghai, China
fYear
2014
fDate
28-30 July 2014
Firstpage
6814
Lastpage
6819
Abstract
Low cycle fatigue life of a steam turbine rotor is predicted using a new CDM model. A simulation experiment is made to compute the damage accumulation of a 300MW steam turbine rotor under cold start. Adopting the cyclic stress-strain relation, this new continuum damage mechanics model exhibits a conservative character. Comparison with result of the linear accumulation theory and practical test data indicates that present new nonlinear CDM model describes the damage accumulation more precisely and reasonably in engineering.
Keywords
continuum mechanics; fatigue; reliability; rotors; rotors (mechanical); steam turbines; stress-strain relations; CDM model; cold start; continuum damage mechanics model; cyclic stress-strain relation; damage accumulation; linear accumulation theory; low cycle fatigue life prediction; power 300 MW; steam turbine rotor; Computational modeling; Data models; Fatigue; Mathematical model; Rotors; Stress; Turbines; continuum damage mechanics; finite element analysis; low cycle fatigue; steam turbine;
fLanguage
English
Publisher
ieee
Conference_Titel
Control Conference (CCC), 2014 33rd Chinese
Conference_Location
Nanjing
Type
conf
DOI
10.1109/ChiCC.2014.6896122
Filename
6896122
Link To Document