MULTIAXIAL LOW CYCLE FATIGUE LIFE PREDICTION MODEL OF THE METAL MATERIAL CONSIDERING ADDITIONAL STRENGTHENING FFECT
For the equivalent strain model,the additional strengthening effect of the material cannot be considered during multiaxial non-proportional loading,resulting in a defect with a large error in fatigue life prediction,based on the pro-interface theory,the maximum shear strain amplitude was used as the...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of Mechanical Strength
2024-10-01
|
| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2024.05.023 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849720509268230144 |
|---|---|
| author | CHENG Qin GAO JianXiong YUAN YiPing LIU YuanYuan YANG HaoJin HENG Fei |
| author_facet | CHENG Qin GAO JianXiong YUAN YiPing LIU YuanYuan YANG HaoJin HENG Fei |
| author_sort | CHENG Qin |
| collection | DOAJ |
| description | For the equivalent strain model,the additional strengthening effect of the material cannot be considered during multiaxial non-proportional loading,resulting in a defect with a large error in fatigue life prediction,based on the pro-interface theory,the maximum shear strain amplitude was used as the main fatigue damage parameter.At the same time,the phase difference,maximum normal stress and shear stress were composed of an additional damage coefficient as a secondary damage parameter to reflect the additional strengthening effect of the metal material under multiaxial non-proportional loading,and the shear stress on the maximum shear surface in the damage coefficient normalized the maximum normal stress to reflect the influence of the interaction between the two stresses on the fatigue life.The proposed model not only retains all the advantages of the equivalent model parameters without introducing additional empirical fitting constants,but also helps to discover the mechanism of crack generation and reflect the direction of crack elongation.The proposed model and three classical models were verified by using six kinds of metal material data of thin-walled round tubes,after analyzing the data verification results of each model,it is found that the prediction results of the proposed model have higher accuracy and more stable data distribution. |
| format | Article |
| id | doaj-art-4ac853e7ec9b4ff1bdcdb19f2ffd9edb |
| institution | DOAJ |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2024-10-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-4ac853e7ec9b4ff1bdcdb19f2ffd9edb2025-08-20T03:11:54ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692024-10-01461200120695123489MULTIAXIAL LOW CYCLE FATIGUE LIFE PREDICTION MODEL OF THE METAL MATERIAL CONSIDERING ADDITIONAL STRENGTHENING FFECTCHENG QinGAO JianXiongYUAN YiPingLIU YuanYuanYANG HaoJinHENG FeiFor the equivalent strain model,the additional strengthening effect of the material cannot be considered during multiaxial non-proportional loading,resulting in a defect with a large error in fatigue life prediction,based on the pro-interface theory,the maximum shear strain amplitude was used as the main fatigue damage parameter.At the same time,the phase difference,maximum normal stress and shear stress were composed of an additional damage coefficient as a secondary damage parameter to reflect the additional strengthening effect of the metal material under multiaxial non-proportional loading,and the shear stress on the maximum shear surface in the damage coefficient normalized the maximum normal stress to reflect the influence of the interaction between the two stresses on the fatigue life.The proposed model not only retains all the advantages of the equivalent model parameters without introducing additional empirical fitting constants,but also helps to discover the mechanism of crack generation and reflect the direction of crack elongation.The proposed model and three classical models were verified by using six kinds of metal material data of thin-walled round tubes,after analyzing the data verification results of each model,it is found that the prediction results of the proposed model have higher accuracy and more stable data distribution.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2024.05.023Multiaxial fatigueEquivalent strainNon-proportional additional reinforcementShear forcePhase difference |
| spellingShingle | CHENG Qin GAO JianXiong YUAN YiPing LIU YuanYuan YANG HaoJin HENG Fei MULTIAXIAL LOW CYCLE FATIGUE LIFE PREDICTION MODEL OF THE METAL MATERIAL CONSIDERING ADDITIONAL STRENGTHENING FFECT Jixie qiangdu Multiaxial fatigue Equivalent strain Non-proportional additional reinforcement Shear force Phase difference |
| title | MULTIAXIAL LOW CYCLE FATIGUE LIFE PREDICTION MODEL OF THE METAL MATERIAL CONSIDERING ADDITIONAL STRENGTHENING FFECT |
| title_full | MULTIAXIAL LOW CYCLE FATIGUE LIFE PREDICTION MODEL OF THE METAL MATERIAL CONSIDERING ADDITIONAL STRENGTHENING FFECT |
| title_fullStr | MULTIAXIAL LOW CYCLE FATIGUE LIFE PREDICTION MODEL OF THE METAL MATERIAL CONSIDERING ADDITIONAL STRENGTHENING FFECT |
| title_full_unstemmed | MULTIAXIAL LOW CYCLE FATIGUE LIFE PREDICTION MODEL OF THE METAL MATERIAL CONSIDERING ADDITIONAL STRENGTHENING FFECT |
| title_short | MULTIAXIAL LOW CYCLE FATIGUE LIFE PREDICTION MODEL OF THE METAL MATERIAL CONSIDERING ADDITIONAL STRENGTHENING FFECT |
| title_sort | multiaxial low cycle fatigue life prediction model of the metal material considering additional strengthening ffect |
| topic | Multiaxial fatigue Equivalent strain Non-proportional additional reinforcement Shear force Phase difference |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2024.05.023 |
| work_keys_str_mv | AT chengqin multiaxiallowcyclefatiguelifepredictionmodelofthemetalmaterialconsideringadditionalstrengtheningffect AT gaojianxiong multiaxiallowcyclefatiguelifepredictionmodelofthemetalmaterialconsideringadditionalstrengtheningffect AT yuanyiping multiaxiallowcyclefatiguelifepredictionmodelofthemetalmaterialconsideringadditionalstrengtheningffect AT liuyuanyuan multiaxiallowcyclefatiguelifepredictionmodelofthemetalmaterialconsideringadditionalstrengtheningffect AT yanghaojin multiaxiallowcyclefatiguelifepredictionmodelofthemetalmaterialconsideringadditionalstrengtheningffect AT hengfei multiaxiallowcyclefatiguelifepredictionmodelofthemetalmaterialconsideringadditionalstrengtheningffect |