The significance of plastic zone growth under cyclic loading and crack opening/closing model in fatigue crack propagation

Masahiro Toyosada, Koji Gotoh

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

6 被引用数 (Scopus)

抄録

Fatigue cracks remain closed at lower loading level during a part of load cycle even though a tension-to-tension loading is applied. The crack closure plays a role to obstruct the generation and growth of compressive plastic zone during unloading. Cyclic plastic work, which corresponds to an irreversible energy consumed in a cracked body is generated ahead of a crack, is required as a fatigue crack driving force. The amout of cyclic plasticity is reduced by a crack closure. The crack opening/closing model based on the Dugdale model under arbitrary stress distributions for a through thickness straight crack is proposed and the fatigue crack growth under various loadings is investigated.

本文言語英語
ホスト出版物のタイトルMaterials Structure and Micromechanics of Fracture IV, MSMF-4 - Proceedings of the Fourth International Conference on Materials Structure and Micromechanics of Fracture
ページ95-102
ページ数8
出版ステータス出版済み - 12 1 2005
イベント4th International Conference on Materials Structure and Micromechanics of Fracture, MSMF-4 - Brno, チェコ共和国
継続期間: 6 23 20046 25 2004

出版物シリーズ

名前Materials Science Forum
482
ISSN(印刷版)0255-5476

その他

その他4th International Conference on Materials Structure and Micromechanics of Fracture, MSMF-4
Countryチェコ共和国
CityBrno
Period6/23/046/25/04

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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