Investigation of creep-fatigue interaction in steam turbine rotor
In this research, the strength analysis and life evaluation of a steam turbine rotor were studied. The effects related to low cycle fatigue and creep were investigated according to ASME BPVC SECTION III-NH. For this purpose, numerical analyses were performed considering transient and steady-state th...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-05-01
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| Series: | Forces in Mechanics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666359725000101 |
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| author | Hussain Gharehbaghi Mehdi Aghaei |
| author_facet | Hussain Gharehbaghi Mehdi Aghaei |
| author_sort | Hussain Gharehbaghi |
| collection | DOAJ |
| description | In this research, the strength analysis and life evaluation of a steam turbine rotor were studied. The effects related to low cycle fatigue and creep were investigated according to ASME BPVC SECTION III-NH. For this purpose, numerical analyses were performed considering transient and steady-state thermal and mechanical loadings. Transient response was used to obtain temperature, stress, and strain distributions as functions of time in low-cycle fatigue analysis, and steady-state response was used for the evaluation of creep effects. Finally, the number of allowed Equivalent Operating Hours (EOH) was determined. Using this method, the turbine start-up curves were modified in such a way that the life provided for the turbine is in the safe area and the fastest possible start-up occurs. |
| format | Article |
| id | doaj-art-fd629a9499eb42a69b0dd39da8d8417f |
| institution | DOAJ |
| issn | 2666-3597 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Forces in Mechanics |
| spelling | doaj-art-fd629a9499eb42a69b0dd39da8d8417f2025-08-20T03:20:56ZengElsevierForces in Mechanics2666-35972025-05-011910031410.1016/j.finmec.2025.100314Investigation of creep-fatigue interaction in steam turbine rotorHussain Gharehbaghi0Mehdi Aghaei1Corresponding author.; MAPNA Group, TUGA, Tehran, IranMAPNA Group, TUGA, Tehran, IranIn this research, the strength analysis and life evaluation of a steam turbine rotor were studied. The effects related to low cycle fatigue and creep were investigated according to ASME BPVC SECTION III-NH. For this purpose, numerical analyses were performed considering transient and steady-state thermal and mechanical loadings. Transient response was used to obtain temperature, stress, and strain distributions as functions of time in low-cycle fatigue analysis, and steady-state response was used for the evaluation of creep effects. Finally, the number of allowed Equivalent Operating Hours (EOH) was determined. Using this method, the turbine start-up curves were modified in such a way that the life provided for the turbine is in the safe area and the fastest possible start-up occurs.http://www.sciencedirect.com/science/article/pii/S2666359725000101Steam turbine rotorAsme iii-nhCreepLCFEOH |
| spellingShingle | Hussain Gharehbaghi Mehdi Aghaei Investigation of creep-fatigue interaction in steam turbine rotor Forces in Mechanics Steam turbine rotor Asme iii-nh Creep LCF EOH |
| title | Investigation of creep-fatigue interaction in steam turbine rotor |
| title_full | Investigation of creep-fatigue interaction in steam turbine rotor |
| title_fullStr | Investigation of creep-fatigue interaction in steam turbine rotor |
| title_full_unstemmed | Investigation of creep-fatigue interaction in steam turbine rotor |
| title_short | Investigation of creep-fatigue interaction in steam turbine rotor |
| title_sort | investigation of creep fatigue interaction in steam turbine rotor |
| topic | Steam turbine rotor Asme iii-nh Creep LCF EOH |
| url | http://www.sciencedirect.com/science/article/pii/S2666359725000101 |
| work_keys_str_mv | AT hussaingharehbaghi investigationofcreepfatigueinteractioninsteamturbinerotor AT mehdiaghaei investigationofcreepfatigueinteractioninsteamturbinerotor |