Abstract
In this study, the fatigue damage analysis and life prediction of welded structures are carried out by using continuum damage mechanics. For high cycle fatigue, it is considered that plastic deformation and damage occurs at a microscopic scale. Therefore, a two-scale model presented by Lemaitre is introduced to evaluate the high cycle fatigue damage evolution. As it is difficult to identify the parameters directly at the micro scale, the identification method is proposed to obtain the reliable material parameters for weldment. In order to consider the effect of residual stress on fatigue behavior of welded joints, the inherent strain method is applied to determine the residual stress. The analytical results by the proposed method are compared to experimental results and it is confirmed that the proposed method could give the reliable fatigue lifetime of welded structures.
Original language | English |
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Title of host publication | Fatigue Damage of Materials: Experiment and Analysis |
Editors | A. Varvani-Farahani, C.A. Brebbia, A. Varvani-Farahani, C.A. Brebbia |
Pages | 309-319 |
Number of pages | 11 |
Publication status | Published - 2003 |
Event | First International Conference on Fatigue Damage of Materials Experiment and Analysis, Fatigue Damage of Materials - Toronto, Ont., Canada Duration: Jul 14 2003 → Jul 16 2003 |
Other
Other | First International Conference on Fatigue Damage of Materials Experiment and Analysis, Fatigue Damage of Materials |
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Country | Canada |
City | Toronto, Ont. |
Period | 7/14/03 → 7/16/03 |
All Science Journal Classification (ASJC) codes
- Engineering(all)