Fatigue damage analysis of welded structures based on continuum damage mechanics

K. Thepvongsa, Yoshimi Sonoda, H. Hikosaka

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

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.

本文言語英語
ホスト出版物のタイトルFatigue Damage of Materials: Experiment and Analysis
編集者A. Varvani-Farahani, C.A. Brebbia, A. Varvani-Farahani, C.A. Brebbia
ページ309-319
ページ数11
出版ステータス出版済み - 2003
イベントFirst International Conference on Fatigue Damage of Materials Experiment and Analysis, Fatigue Damage of Materials - Toronto, Ont., カナダ
継続期間: 7 14 20037 16 2003

その他

その他First International Conference on Fatigue Damage of Materials Experiment and Analysis, Fatigue Damage of Materials
国/地域カナダ
CityToronto, Ont.
Period7/14/037/16/03

All Science Journal Classification (ASJC) codes

  • 工学(全般)

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