A non-unified viscoplastic constitutive model based on irreversible thermodynamics and creep-fatigue life prediction for Type 316 stainless
In this work, to describe the cycle behavior considering fatigue-creep interaction, a non-unified viscoplastic constitutive model for 316 stainless steel is derived within the irreversible thermodynamic framework. The internal variables considering kinematic and isotropic hardening properties are se...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2022-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ac5b48 |
| _version_ | 1797746523542388736 |
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| author | Yehui Cui Xiangguo Zeng Junfeng Xiao Huayan Chen |
| author_facet | Yehui Cui Xiangguo Zeng Junfeng Xiao Huayan Chen |
| author_sort | Yehui Cui |
| collection | DOAJ |
| description | In this work, to describe the cycle behavior considering fatigue-creep interaction, a non-unified viscoplastic constitutive model for 316 stainless steel is derived within the irreversible thermodynamic framework. The internal variables considering kinematic and isotropic hardening properties are selected to construct the evolution equation of visco-plastic and creep terms. The proposed constitutive model was validated by the comparison with the existing literature. It was manifested that this constitutive model could successfully predict the hardening behavior and stress relaxation process under the cyclic loading. During the dwell period, the increment of the inelastic strain is decomposed into the viscoplastic and creep term. The viscoplastic deformation dominates first stage of the stress relaxation, while the stable stage is controlled by the creep term. Finally, the predicted values of mean stress are taken into the Manson-Coffin law, the low cycle fatigue life prediction are carried out based on the numerical model, which showed robust correlation with experimental results. |
| first_indexed | 2024-03-12T15:38:59Z |
| format | Article |
| id | doaj.art-2b6aaad728c84a22827aacb2499c1c0c |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:38:59Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-2b6aaad728c84a22827aacb2499c1c0c2023-08-09T16:04:43ZengIOP PublishingMaterials Research Express2053-15912022-01-019303651110.1088/2053-1591/ac5b48A non-unified viscoplastic constitutive model based on irreversible thermodynamics and creep-fatigue life prediction for Type 316 stainlessYehui Cui0https://orcid.org/0000-0002-8138-598XXiangguo Zeng1Junfeng Xiao2Huayan Chen3College of Architecture and Environment, Sichuan University , Chengdu 610065, People’s Republic of China; Key Laboratory of Energy Engineering Safety and Disaster Mechanics, Ministry of Education, Sichuan University , Chengdu 610065, People’s Republic of ChinaCollege of Architecture and Environment, Sichuan University , Chengdu 610065, People’s Republic of China; Key Laboratory of Energy Engineering Safety and Disaster Mechanics, Ministry of Education, Sichuan University , Chengdu 610065, People’s Republic of ChinaCollege of Architecture and Environment, Sichuan University , Chengdu 610065, People’s Republic of ChinaCollege of Architecture and Environment, Sichuan University , Chengdu 610065, People’s Republic of China; Key Laboratory of Energy Engineering Safety and Disaster Mechanics, Ministry of Education, Sichuan University , Chengdu 610065, People’s Republic of ChinaIn this work, to describe the cycle behavior considering fatigue-creep interaction, a non-unified viscoplastic constitutive model for 316 stainless steel is derived within the irreversible thermodynamic framework. The internal variables considering kinematic and isotropic hardening properties are selected to construct the evolution equation of visco-plastic and creep terms. The proposed constitutive model was validated by the comparison with the existing literature. It was manifested that this constitutive model could successfully predict the hardening behavior and stress relaxation process under the cyclic loading. During the dwell period, the increment of the inelastic strain is decomposed into the viscoplastic and creep term. The viscoplastic deformation dominates first stage of the stress relaxation, while the stable stage is controlled by the creep term. Finally, the predicted values of mean stress are taken into the Manson-Coffin law, the low cycle fatigue life prediction are carried out based on the numerical model, which showed robust correlation with experimental results.https://doi.org/10.1088/2053-1591/ac5b48316 stainless steelviscoplasticcreepconstitutive modellife prediction |
| spellingShingle | Yehui Cui Xiangguo Zeng Junfeng Xiao Huayan Chen A non-unified viscoplastic constitutive model based on irreversible thermodynamics and creep-fatigue life prediction for Type 316 stainless Materials Research Express 316 stainless steel viscoplastic creep constitutive model life prediction |
| title | A non-unified viscoplastic constitutive model based on irreversible thermodynamics and creep-fatigue life prediction for Type 316 stainless |
| title_full | A non-unified viscoplastic constitutive model based on irreversible thermodynamics and creep-fatigue life prediction for Type 316 stainless |
| title_fullStr | A non-unified viscoplastic constitutive model based on irreversible thermodynamics and creep-fatigue life prediction for Type 316 stainless |
| title_full_unstemmed | A non-unified viscoplastic constitutive model based on irreversible thermodynamics and creep-fatigue life prediction for Type 316 stainless |
| title_short | A non-unified viscoplastic constitutive model based on irreversible thermodynamics and creep-fatigue life prediction for Type 316 stainless |
| title_sort | non unified viscoplastic constitutive model based on irreversible thermodynamics and creep fatigue life prediction for type 316 stainless |
| topic | 316 stainless steel viscoplastic creep constitutive model life prediction |
| url | https://doi.org/10.1088/2053-1591/ac5b48 |
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